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When the net force acting on a body is zero the body is in

Riesenauswahl an MarkenqualitГ¤t. Folge Deiner Leidenschaft bei eBay! Гњber 80% neue Produkte zum Festpreis; Das ist das neue eBay. Finde вЂЄNet BodyвЂ¬ No, if the net force acting on a body be zero, then the body won't necessarily be in the rest position. The situation of the net force equal to zero is impossible in reality. When the net force of the body is equal to zero, it implies that the body cannot be accelerated. This follows from Newton's second law of motion If the net force acting on an object is zero, then the object is not accelerating and is in a state that we call equilibrium. When an object is in equilibrium, then two things can be true: either the object is not moving at all, or the object is moving with a constant speed. Read complete answer here your answer is NO if the body is initially at rest and net force on it is zero the body will continue being in the sate of rest after the application of force If the body is in uniform motion and net external force on body is zero then body will continue its state of uniform motion 2.4K view

No the net force zero does not define the body at rest it defines the body at equilibrium. for example F = ma we know if F net be zero then acceleration had to be zero. but in case of constant velocity the acceleration is then also zero. a body moving with constant velocity has acceleration zero but it is not at res Yes, and not only that. It will ALWAYS have constant velocity when the net force (the sum of all the forces acting on an object: in this case pulling and frictional forces response) is zero. This is the statement of Newton's 1st law of motion. It doesn't matter if there is friction or not, the statement is always valid If two horizontal forces F 1 and F 2 , act on a body of certain mass act in opposite directions such that they are odd consecutive forces then find the net force acting on the body

GroГџe Auswahl an вЂЄNet Body - Net bodyвЂ

1. No force acts on a body at rest; if at least one force acted on it the body would move. B.) No net force acts on a body at rest; when the net force is zero, the body is in static equilibrium C.
2. Answer: the net force will be zero because an object moving with uniform velocity has zero acceleration so there is no change in velocity. according to Newton's second law acceleration is directly proportional to force if acceleration =zero force =massГ— acceleration, force = Mass Г—0 that equals to zero thus net force acting on the body is zero
3. a) Force b) Angular Momentum c) Torque d) Impulse. 8. 9. Which of the following is a scenario where an object would be in rotational equilibrium? a) When there is no torque acting on the object b) When all the torques acting on the object cancel out c) When the sum of all torques acting on the object equals zero d) All of the answers are.
4. If the net force on an object is zero, a. there must be no forces acting on the object b. the object must be at rest c. the object's acceleration must be zero The net force acting on the body is a. 2 N b. 4 N c. 8 N d. 16 N e. 6 N. c. 8 N a = (8m/s - 0 m/s) / 2s = 4 m/s^2 F = ma = 2kg(4 m/s^2) = 8 kg m/s^2 (since 1 N = 1 kg m/s^2) then your.
5. The correct answer is zero. Equal forces acting in opposite directions are called balanced forces.; Balanced forces acting on an object will not change the object's motion. When you add equal forces in opposite directions, the net force is zero.; Force and Motion A force is a push or a pull.; Forces are described not only by how strong they are but also by the direction in which they act
6. Now in practice, although the net force is zero and you would remain in the same position, the individual forces are not zero and they are acting at local points on your body, and if they were large enough you would be crushed by them, even though they cancelled each other out and there was no net motion. 4K view
7. Physically, your net force does not have to depend on mass, like if there are only electrostatic forces present. In a physical sense, Newton's second law is more of a relationship between the net force on an object and the acceleration resulting from that net force. This acceleration will be proportional to the net force through the mass

If The Net Force Acting On A Body Be Zero, Then Will The

• ute video. Updated On: 13-6-2020. To keep watching this video solution for FREE, Download our App. Join the 2 Crores+ Student community now! Watch Video in App. This browser does not support the video element
• When the net force on a body ia zero, its acceleration (F = m a) is zero. It means that either dvis at rest or it is movinG with a constant velocity. Even if there are many forces acting on the bo the body will remain at rest if their resultant is zero
• An object is in equilibrium when the net force on a body is zero. When in equilibrium the object is motionless or moves with constant velocity. body at rest must be in translational equilibrium. This is the state that no net (unbalanced forces) forces are acting on a body
• Click hereн Ѕн±†to get an answer to your question пёЏ 10. A body moves with velocity v = lnx m/s where x is its position. The net force acting on body is zero at (A)0 m (B) x = eб»Ѓm (C) x = em (D) x =l
• The net force acting on the body is equal to zero but the net torque is not equal to zero. A. The net force acting on the body is not equal to zero but the net torque is equal to zero. Tags: Question 4 . SURVEY . 30 seconds . Q. What is rigid body? answer choice
• In principle, we can make the net force on a body zero. If its velocity relative to a given frame is constant, then that frame is said to be inertial. So by definition, an inertial reference frame is a reference frame in which Newton's first law is valid. Newton's first law applies to objects with constant velocity
• acceleration. equal in size to 9.8 m/s2, regardless of their and . Whether the free-fall acceleration is -9.8 m/s/s or +9.8 m/s/s depends on if you chose downward to be the negative or positive direction. an object's motion will not change unless it experiences a net force. the total amount of remaining unbalanced force on an object

c. The gravitational force acting on all objects in the same locality is the same. 25. If a body is moving at constant velocity along a straight line, it must have: a. A constant net force acting upon it b. Constant non-zero acceleration c. Constant speed d. None of the above Fnet = sum of Forces (x,y,z). I use the Free Body Diagram to illustrate Fnet and anet. The forces acting on an object are drawn on the FBD (Fgrav, Ffriction, Fapplied, Tension, Fnormal, Fair, Fspring). Then the forces are added vectorally to find the resultant or net force If a body is moving with constant velocity, acceleration is zero. So net force acting on it will be also zero. But the body has energy due to its constant motion. What is the net force of an object at constant velocity?, When an object is in equilibrium (either at rest or moving with constant velocity), the net force acting on it zero Since action and reaction forces are exactly equal and oppositely directed, the net force on a body is always zero. (a) For questions 44-47 draw a free body diagram (to the right of the figure) showing the forces acting on the objects described. Give a name to the forces, such as force of gravity, tension, normal, etc. 44 When a steady torque is acting on a body, the body Option 1) Continues in its state of rest or uniform motion along a straight line Option 2) Gets linear acceleration Option 3) Gets angular acceleration Option 4) Rotates at a constant spee

What happens when net force zero? - TreeHozz

• Here we will discuss the first condition, that of zero net force. In the form of an equation, this first condition is: $\text{F}_\text{net} = 0$. In order to achieve this conditon, the forces acting along each axis of motion must sum to zero. For example, the net external forces along the typical x- and y-axes are zero. This is.
• In the diagram shown above, the net force acting on the rod is zero and the acceleration of the center of mass also equals zero. About center of mass both forces produce the torque in the same sense that is anticlockwise. Thus, the net torque is non-zero and the body is only in translation equilibrium
• e the net force (i.e., the vector sum of all the individual forces). Consider the three situations below in which the net force is deter
• Aug 07,2021 - If five forces are acting on the single particle and having an angle of 72 between each and are collinear, then:a)The net force acting on the body is zero and it is stableb)The net force acting on the body is horizontalc)The net force acting on the body is verticald)The net force acting on the body is at an angle of 45Correct answer is option 'A'

This condition is always true for a body which is in the state of equilibrium. It is given by the expression F net = ma = 0. For achieving this condition, the forces which are acting along each of the axes of the motion should sum up to zero. For example, the net external forces that are acting along the typical x- and y-axes are zero The net force vector is equal to the mass of the body times the acceleration of the body.вЂ”вЂ”If the resultant force acting on a particle is not zero, the particle will have an acceleration proportional to the magnitude of the resultant and in the direction of this resultant force.вЂ”вЂ”The force acting on a body is proportional to the product. Thus, the net force applied to a body produces a proportional acceleration. In other words, if a body is accelerating, then there is a force on it. Any mass that is gained or lost by the system will cause a change in momentum that is not the result of an external force. A different equation is necessary for variable-mass systems (see below)

If the net torque acting on the body is zero, then the body is in - (a) transnational equilibrium (b) rotational equilibrium в†ђ Prev Question Next Question в†’ 0 vote When the forces acting moving body are balanced the net force becomes zero. As a result the body will: A. move with an increasing velocity. B. Move with decreasing velocity. C. Move with constant (uniform) velocity. D. Stop moving   If the net force acting on a body is zero, then will the

• ar flow past a cylinder, the net force acting on the cylinder is zero. Will it be still be zero if it is replaced by another symmetric shape (for instance a triangular section prism)
• The resultant of the forces acting on a body will be zero if the body. A. Rotates. B. Moves with variable velocity in a straight line. C. Moves along a curved path. D. Does not move at all. Answer: Option
• This is a Most important question of gk exam. Question is : The sum of all the forces acting on a body is zero this condition represents equilibrium's , Options is : 1. first condition, 2. second condition, 3.third condition, 4. fourth condition, 5. NULL. Electronics Bazaar is one of best Online Shopping Store in India
• When the net force acting on a body is not equal to zero, then definitely the velocity of the body will change. Thus, change in momentum takes place in the direction of the force. The change may take place either in magnitude or in direction or in both. Question 4. State and prove the law of conservation of linear momentum. Answer
• ) Lifting a weight. (a) Schematic of forces used. (b) The forces where T is an approximation for all of the muscle forces and R is the resultant force on the fifth lumbar vertebra (L5). An often abused part of the body is the lumbar (lower back) region. The calculated force at the fifth lumbar vertebra (L5) with the body tipped forward at 60o.
• The car's engine produces a forward force; friction, a force between the road and the tires of the car that opposes forward motion, has exactly the same magnitude as the engine force, producing the net force of zero. The body continues in its state of constant velocity until the net force becomes nonzero

if the net force acting on a body be zero ,then will the

Any force can be decomposed into two parts. In this case the net force on the interface may be considered the sum of: (1) The net force due to A acting on the interface, and (2) the net force due to B acting on the interface. Two bodies in contact are equivalent to two bodies with a zero mass body between them at the point of contact When the forces on an object are balanced, the net force is zero and there is no change in the object's motion. When an unbalanced force acts on an object, the object accelerates. Gravity causes objects to accelerate downward, whereas air resistance acts in the direction opposite to the motion and reduces acceleration When a body is moving with a constant velocity, the net external force acting on the body is zero. 265 Views. Switch; Flag; Bookmark; A motorcar of mass 1,200 kg is moving along a straight line with a uniform velocity of 90 km/h. Its velocity is slowed down to 18 km/h in 4 s by an unbalanced external force. Calculate the acceleration and change. A net force acting on a body is required to accelerate it or stop its motion. An object at rest will stay at rest, and an object in motion at a constant velocity will continue in that state. If the net (total) force on a body has zero component in one direction, the body will not move in that direction. If the vector sum of all forces and the sum of all torques acting on a body is zero then that body is not accelerating

Give an Example When Work Done by the Force of Gravity Acting on a Body is Zero Even Though the Body Gets Displaces from Its Initial Position. CISCE ICSE Class 10. Question Papers 301. Textbook Solutions 25526. Important Solutions 2871. Question Bank Solutions 26084. Concept Notes. when the net external force acting on the system is zero Within the system objects may collide with each other, thus exerting forces on each other. However, Newton 's 3rd law states that these forces are equal in magnitude, but opposite in direction, therefore there is no net force. The system conserves momentum The net force being zero may mean that there are no forces acting on an object, but also could mean that there are forces acting on an object, but they are in equilibrium. Wiki User 2010-01-17 14. If net force is zero, then net force along any direction is zero. The second condition necessary to achieve equilibrium involves avoiding accelerated rotation. A rotating body or system can be in equilibrium if its rate of rotation is constant and remains unchanged by the forces acting on it

The net force acting on a body becomes zero.Equal forces acting in opposite directions are called balanced forces.When you add equal forces in opposite directions, the net force is zero No forces act indicates that there are no external forces in a system, that is, that it is completely isolated. But saying, the net force is zero implies that there are forces acting, and that the vector sum of them is zero. Question (2) Newton's First Law says that if the net force on an object is zero, it maintains its rest or uniform movement

where ОЈF represents the summation of all forces acting on a body (i.e., the net force), m is the body's mass, and a is the acceleration of the body's center of gravity (CG). A simple model of the body illustrates the application of Newton's 2nd law to the vertical motion of an individual during a vertical jump: ОЈF = mbacg (GRFv - W) = mbacg. If the resultant torque of all the forces acting on a body is zero about a point is it necessary that it will be zero about any other point The net force acting on a body of mass 20 kg moving with a uniform velocity of 2 ms is 40 N 20N 35N Zero As velocity is uniform therefore acceleration 'a'

How can a body have constant velocity when net force on it

Under this condition, the body is said to be in rotational equilibrium. The vector sum of different torques 1 , 2 , 3 producing different senses of rotation on the body is zero. Thus, we can also conclude that a rigid body is in mechanical equilibrium when the net force and net torque acts on the body is zero A body is said to be in equilibrium if the net force acting on the body is zero. By Newton's second law, the acceleration of such objects will be zero. Zero acceleration implies a constant velocity. Constant velocity also includes zero velocity as a special case. So an object in equilibrium can either have zero velocity or a constant non-zero.

In which of the following cases, the net force acting on

1. The forces would cancel each other out and hence the net force on the block would be zero. Since the block is at rest, it will be in static equilibrium. 2) Dynamic equilibrium: This is the type of equilibrium in which the resultant of all the forces acting on the body is zero, i.e. the net acceleration of the body is zero, but the velocity of.
2. The overall force acting upon an object. In order to calculate the net force, the body is isolated and interactions with the environment or other constraints are represented as forces and torques in a free-body diagram. Net force is the vector sum of forces acting on a particle or body. The net force is a single force that replaces the effect.
3. Calculating Net force acting on an object at an instant | definition of Net force | 8th class Physical Science 1st chapter | Force | TS Board Syllabus physic..
4. If you are referring to the TOTAL Reaction force acting on the body, the body can be coupled to a point during the model setup stage. After the analysis, the Reaction force can be checked at.
5. The first law states that a body at rest will stay at rest until a net external force acts upon it and that a body in motion will remain in motion at a constant velocity until acted on by a net external force. Net external force is the sum of all of the forcing acting on an object
6. g couple are equal and opposite the couple doesn't produce translational motion. When it acts on a body net resultant force acting on a body is zero. It produces pure rotational motion in the body this is because the algebraic sum of the moments of the two forces about any point in their plane is not zero
7. YES. If the net external force acting on an object is zero, it is possible for the object to be traveling with a nonzero velocity. According to Newton's 1st and 2nd laws, if the net external force Fnet is zero, the acceleration a is also zero. If the acceleration is zero, the velocity must be constant, both in magnitude and in direction

Is it correct to say that no force acts on a body at rest

The magnitude of torque of a rigid body depends on three quantities: the force applied, and F is the force acting on the particle. The magnitude When the net force on the system is zero, the torque measured from any point in space is the same. For example, the torque on a current-carrying loop in a uniform magnetic field is the same. When two or more external forces acting on a body produce no net resultant force, i.e., vector sum of forces is zero, we say that the forces are balanced.The lack of resultant force produces no net acceleration and hence, the body will remain at rest or moves at its original constant velocity in a straight line.. This is Newton's First Law of Motion; An external force is one whose source.

the net force acting on a body of mass 5kg with uniform

A body at rest implies that the net resultant force applied on the body is zero. However, it is not necessarily that there is no force acting on the body. In the above-given picture, a box is seen resting on a table has zero net resultant force. But there are two forces acting on the box given above The net force of the body is zero that doesn't means that the force are not being applied to the body at all and hence the body is in equilibrium. The equilibrium is only attained if the net force on the body tends to be equal to zero. Thus the forces cancels out long ranger force) and the normal force exerted by the table (a contact force). There are two forces acting on the book, but it is not moving because the net force on the book is zero. Assess: The net force, which is the vector sum of the forces acting on an object, governs the acceleration of objects through Equation 4.4. Q4.3. Reason: Newton. What is true, is that a body always accelerates in the direction of the net force acting on it. However, it may not be MOVING in that direction at the moment Yes, a body can be in equilibrium if it is in motion. By the second law of motion, we know that the acceleration in such bodies is zero. No acceleration implies constant velocity. So an object with constant velocity is in equilibrium. What is an example of an object in equilibrium? The net force acting on the object must be zero

For a body to be in equilibrium, there must be no net force acting on it. In addition, there must be no net torque acting on it. Figure 17A shows a body in equilibrium under the action of equal and opposite forces. Figure 17B shows a body acted on by equal and opposite forces that produce a net torque, tending to start it rotating Force F1 = 40 N North and F2 = 60 N West are acting on a 20 kg body that is resting on a level surface with Вµ= 0.25. (a) Draw a top view and find the resultant applied force. (b) Draw a side view and find the net force acting on the body If the net force is zero it surely implies that centre of mass will not accelerate. As discuused in the videos, the net torque may not be zero in such a case. Thus body can have angular acceleration

If the net force acting on a body is not zero, then the body is neither at rest nor in uniform motion in a straight line. Stopping of a Moving Vehicle: If the car engine is switched off or brakes are applied to stop a car, the car does not stop at once 'If there is no net force acting on a body' The net, or total, force acting on the object is zero Newtons. This means one of two things. There could be no forces acting on the object. Or there could be several forces acting on the object, but they push against each other and cancel, and the result is as if no force is acting (b) When the net force acting on the body is zero. 22. If no force acts on a body at rest, then what effect can be observed? (a) The body changes shape. (b) The body moves with increased speed. (c) The body remains at rest. (d) The body breaks up. (c) The body remains at rest State two conditions when the work done by a force acting on a body is zero. Advertisement Remove all ads. Solution Show Solution (i) When there is no displacement by the force in the body. (ii) When the displacement is normal to the direction of the force. Concept: Force - Forces in Equilibrium

6. Sum of all torques acting on a body is zero, this ..

1. When the net force acting on the body is zero done clear. C) When there is a gravitational pull. done clear. D) When there is friction between the body and the water done clear. View Solution play_arrow; question_answer12) In which of the following cases the net force is NOT equal to zero? A) A kite held stationary in the sky..
2. I had a feeling that if I simply said zero then some wise guy would come along and say that if the net force on a body is zero only in free-fall otherwise there's a 4-force acting on it. That'd be the answer to give from a general relativity point of view. The Newtonian answer would be zero. So it's not so easy
3. The large ОЈ (the Greek letter sigma) represents the vector sum of all the forces, or the net force, acting on a body. It is rather difficult to imagine applying a constant force to a body for an.
4. When the linear momentum of a body is constant, the net force acting on it. When the linear momentum of a body is constant, the net force acting on it A. is zero B. increases C. decreases D. remains constant Correct Answer: Option A Explanation No official explanation is available for this question at this time. Please check contributions.
5. If the resultant of various forces acting on a body is zero, the forces are said to be 'balanced forces'. These forces do not change the speed but usually change the shape of an object. Examples: (a) Consider a wooden block lying on a table, the strings tied to its two opposite faces, as shown in the figure

If the net force on an object is zero, it can move with a constant velocity. If the object is initially at rest, then it will remain at rest. If it is initially in motion, then it will continue to move at the same velocity. Newton's first law states that when the vector sum of all forces acting on an object (the net force) is zero, the object. the resultant of a force acting on a body will be zero, if the body. A. rotate with constant speed. B. does not rotates. C. rotates with uniform acceleration. D. rotates with uniform decleration Give an example when work done by the force of gravity acting on a body is zero even though the body gets displaces from its initial position. work energy and power; icse; class-10; Share It On Facebook Twitter Email. 1 Answer. 0 votes . answered Sep 8, 2018 by. Net force.Net force is the vector sum of forces acting on a particle or body.The net force is a single force that replaces the effect of the original forces on the particle's motion. It gives the particle the same acceleration as all those actual forces together as described by the Newton's second law of motion Equilibrium of Forces. A body is said to be in equilibrium when the resultant of the force system on it is zero. If a body is in equilibrium, it will continue to remain in the state of rest or of uniform motion. It can also be said as If the net effect of all the forces acting on a particle will be zero and the particle is said to be in.

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If the net force acting on an object is zero, then it means that the object's velocity is constant and the object isn't speeding up or slowing down. That is, there is no acceleration on an object with zero net force. Force is not required for an object to continue moving or staying at a state of rest. It is necessary for force to act on any. Give an example when work done by force acting on a body is zero even though the body gets displaced from its initial position by the application of force Share with your friends. Share 3. Dear students, Zero Work done: When the force applied or the displacement or both are zero, or force and displacement are perpendicular to each other, the. Free-body diagrams. In applying Newton's second law to a problem, the net force, which is the sum of all the forces, often has to be determined so the acceleration can be found. A good way to work out the net force is to draw what's called a free-body diagram, in which all the forces acting on an object are shown

For equilibrium, the net moment acting on the body by various conservative forces is _____: a. One. b. Two. c. Three. d. Zero. Ans6. (d) Zero . 7. The conservative frictional force always acts _____ to the surface of the application of the friction. In any closed path, the work done by a conservative force is zero. The work done by a. The free-body diagram shows the forces acting upon a 100-kg crate that is sliding down an inclined plane. The plane is inclined at an angle of 30 degrees. The coefficient of friction between the crate and the incline is 0.3 ( c) The net force acting on the electron is zero. The electron moving in the remote space has no external forces working on it thus the net force acting on it is zero. ( d) The net force working on the rain drop is zero. As the rain drop is falling at a constant velocity its acceleration is zero. Thus, according to Newton's second law of. Consider the free-body diagram in Figure I that shows the forces acting on a block sitting on an inclined plane. In the y-direction (defined as perpendicular to the surface of the plane), there are two forces acting on the block; the sum of those forces must be equal to zero since the block is not moving in that direction Every body continues to be in its state of rest or of uniform motion in a straight line unless compelled by an unbalanced external force. It is simply expressed as if the net external force on a body is zero, its acceleration is zero. Acceleration can be non-zero only if there is a net external force on the body

d.) With constant speed, there is still be a net force that is directed inward (relative to the curve) on the car. 2.) A mass attached to a string that is itself attached to the ceiling swings back and forth. a.) At the bottom of the arc, it has no net force acting on it. b.) At the bottom of the arc, it has no net force acting in the vertical. c. 1)algebraic sum of horizontal components of all forces acting on the body is must be zero, 2)Algebraic sum of vertical components all forces acting on the body is must be zero, 3)Algebraic sum of moments due to all forces and couple moments acting the body is in must be zero. 12.Write the equation of equilibrium of a rigid body In cases where there is no fluid motion, the only forces acting on a fluid element are the body force (gravity) and the forces due to pressure. Since there is no acceleration, summation of all forces on the element must equal zero; pressure forces are exactly balanced by gravity forces. This situation is known as fluid statics or hydrostatics

Therefore, the first law says that the velocity of an object remains constant if the net force on it is zero. Newton's first law is usually considered to be a statement about reference frames. It provides a method for identifying a special type of reference frame: the inertial reference frame. In principle, we can make the net force on a body. VECTOR FORCES AND FREE-BODY DIAGRAMS Net force = vector sum = E F and is % to acceleration of an object Example 4.7 Calculate the sum of the two forces acting on the boat shown in Fig. 4-19a. Free-Body diagram:! Show all forces acting on EACH object involved! Point masses for now..... until we start rotating stuff! Example 4.  The problem asks for the acceleration, and therefore Forces is the best way to approach this problem (because if we find the net force, we've found the acceleration - via ОЈF = ma .). 1. Draw one Free Body Diagram for each object. We can ignore the pulley (it's not mentioned that we should take it into account, and we know nothin resultant of these two forces will be zero, and therefore the boat will remain at rest (it will not move up or down). Figure 2.1.3: a zero resultant force acting on a boat The resultant force acting on the particle of Fig. 2.1.2 is non-zero, and in that case one applies Newton's second law and external torques (due to forces on the particles from bodies outside system). Forces inside system third law force pairs torque int sum =0 The only torques that can change the angular momentum of a system are the external torques acting on a system. The net external torque acting on a system of particles is equal to the tim Yes, it is possible that a force is acting on a body but the work done is zero. E.g., Consider a coolie carrying a load on his head across a level road. He exerts an upward force equal to the weight of the load. But the displacement of the load is in the horizontal direction. Thus the angle between force F and displacement s is 0В°.Hence, W = Fs cos 90В° = 0   14. The object shown moves to the right under the influence of all the forces acting on it. Identify which forces do nonzero work on the object. Indicate if any do negative work on the object. F does + work and F does - wor force pushing back on you? 5. The diagram in Figure 5.22 shows three forces acting on a pencil. What is the net force acting on the pencil? 6. If an object is in equilibrium, a. the net force on the object is zero. b. the object has zero total mass. c. no forces are acting on the object. d. only normal forces are acting on the object. 7 Internal forces on the constituent components of a system cancel each other out to produce a net force of zero and hence do not contribute to the motion of the system. 5. A rock is thrown straight up. At the top of the trajectory, the velocity is momentarily zero. Does this imply that the force acting on the object is zero? Explain your answer. If The Net Force Acting On A Body Be Zero, Then Will The . MCQ Questions for Class 9 Science: Ch 9 Force and Laws of Motion. 1. A plate, a ball and a child all have the same mass. The one having more inertia is the. 2. The inertia of an object tends to cause the object. 3. The rate of change of momentum with respect to time is measured in. Engineering Mechanics Mcq. 1 - The term 'force' may be defined as an agent which produces or tenas to produc tends to destroy motion. (a) Agree. (B) Disagree. 2. A force while acting on a body may. (a) change its motion. (b) balance the forces, already acting on it. (c) give rise to the internal stresses in it In (b), all external forces acting on the system add together to produce the net force . The free-body diagram shows all of the forces acting on the system of interest. The dot represents the center of mass of the system. Each force vector extends from this dot. Because there are two forces acting to the right, the vectors are shown collinearly