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Newton's Laws of Motion — JEE Main & Advanced Physics PYQs

84 previous year questions from Newton's Laws of Motion with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

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1

A block with a mass of 2 kg rests on a long frictionless horizontal table and is pulled horizontally by a constant force F . The block is observed to travel 10 m during the first t

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2

A block of mass 0.2 kg is suspended from the ceiling by a light string. A second block of mass 0.3 kg is suspended from the first block through another string. Determine the tensio

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3

Placed on a smooth horizontal table, two blocks of equal mass m are connected by a light string. A constant force F is applied to pull one of the blocks along the line connecting t

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4

In a TV picture tube, electrons are emitted from the cathode with negligible speed and attain a velocity of 5 10⁶ m/s after travelling one centimeter. Assuming straight line motion

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5

Travelling at 40 km/h , a car must be brought to a halt by applying brakes within the next 4.0 m . Given that the car weighs 2000 kg , determine the average force that must be appl

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6

A particle of mass 50 g travels along a straight line. The variation of its speed with time is displayed in the figure. Determine the force acting on the particle at t = 2 , 4 , an

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7

Two blocks A and B having masses m_A and m_B respectively are placed in contact on a frictionless table. An experimenter pushes block A from behind, causing the blocks to accelerat

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8

Raindrops, each having a radius of 1 mm and a mass of 4 mg , are falling at a speed of 30 m/s onto the head of a bald person. Upon splashing on the head, the drops come to rest. As

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9

A force F = -kx , where k = 15 N/m , acts on a particle of mass 0.3 kg . Determine the initial acceleration of the particle when it is released from the position x = 20 cm .

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10

In the arrangement depicted in the figure, both springs are unstretched. If the block is given a displacement of x and released, what will be its initial acceleration?

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11

A small block B is positioned on another block A of mass 5 kg and length 20 cm . Initially, block B is situated near the right end of block A , as shown in the figure. A constant h

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12

A man has fallen into a ditch of width d , and two of his friends are slowly pulling him out using a light rope and two fixed pulleys as shown in the figure. Assuming the force exe

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13

As shown in the figure, an elevator is descending with an acceleration of 2 m/s ^2 . Block A has a mass of 0.5 kg . Determine the force exerted by block A on block B .

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14

A pendulum bob of mass 50 g hangs from the ceiling of an elevator. Determine the tension in the string given that the elevator is travelling upward with an acceleration of 1.2 m/s

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15

A pendulum bob of mass 50 g hangs from the ceiling of an elevator. Determine the tension in the string given that the elevator is travelling upward with a deceleration of 1.2 m/s ^

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16

A pendulum bob of mass 50 g hangs from the ceiling of an elevator. Determine the tension in the string given that the elevator is travelling upward with a uniform velocity.

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17

A pendulum bob of mass 50 g hangs from the ceiling of an elevator. Determine the tension in the string given that the elevator is travelling downward with a deceleration of 1.2 m/s

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18

A pendulum bob of mass 50 g hangs from the ceiling of an elevator. Determine the tension in the string given that the elevator is travelling downward with an acceleration of 1.2 m/

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19

A pendulum bob of mass 50 g hangs from the ceiling of an elevator. Determine the tension in the string given that the elevator is travelling downward with a uniform velocity.

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20

A person stands on a weighing machine placed on the floor of an elevator. The elevator starts moving upwards with a certain acceleration, proceeds with a uniform velocity for a whi

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21

A person stands on a weighing machine placed on the floor of an elevator. The elevator starts moving upwards with a certain acceleration, proceeds with a uniform velocity for a whi

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22

Determine the reading of the spring balance depicted in the figure. The elevator is ascending with an acceleration of g/10 , the pulley and the string are light, and the pulley is

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23

A 2 kg block is suspended from the ceiling using a massless spring having a spring constant k = 100 N/m . Find the elongation of the spring. If an additional 1 kg is attached to th

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24

A 2 kg block is suspended from the ceiling of an elevator using a massless spring having a spring constant k = 100 N/m . The elevator is going up with an acceleration of 2.0 m/s ^2

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25

A constant upward buoyancy force B is exerted by the atmosphere on a balloon. The air resistance acting on the balloon is proportional to its velocity and opposes its motion. Carry

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26

When placed deep in water, an empty plastic box of mass m accelerates upward at a rate of g/6 . Determine the mass of sand that must be added to the box so that it accelerates down

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27

In addition to the force of gravity, a force F = v A acts on a particle, where v represents the particle's velocity and A is a constant horizontal vector. Determine the minimum spe

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28

In a simple Atwood machine, two unequal masses m₁ and m₂ are connected by a string going over a clamped light smooth pulley. In an arrangement as shown in the figure, m₁ = 300 g an

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29

In a simple Atwood machine, two unequal masses m₁ and m₂ are connected by a string going over a clamped light smooth pulley. In an arrangement where m₁ = 300 g and m₂ = 600 g , the

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30

In a simple Atwood machine, two unequal masses m₁ and m₂ are connected by a string going over a clamped light smooth pulley. In a setup where m₁ = 300 g and m₂ = 600 g , the system

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31

In a simple Atwood machine, two unequal masses m₁ and m₂ are connected by a string going over a clamped light smooth pulley. In a typical arrangement shown in the figure, m₁ = 300

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32

As depicted in the figure, a uniform rod of length 30 cm and mass 3.0 kg is pulled by strings subjected to constant forces of 20 N and 32 N . Determine the force exerted by the 20

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33

Consider the setup presented in the figure. All surfaces are frictionless, while the string and pulley are light. Determine the magnitude of the acceleration of the two blocks.

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34

As shown in the figure, a constant force F = m₂ g/2 is exerted on the block of mass m₁ . The surface of the table is smooth, and the string and pulley are light. Determine the acce

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35

In the figure provided, the masses are m₁ = 5 kg and m₂ = 2 kg , while the applied force is F = 1 N . Determine the acceleration of either block. Also, describe the motion of m₁ if

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36

In the arrangement depicted in the figure, let m₁ = 1 kg , m₂ = 2 kg and m₃ = 3 kg . Determine the accelerations of the masses m₁ , m₂ , and m₃ . When the system is released from r

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37

In the figure shown, suppose m₂ = 2.0 kg and m₃ = 3.0 kg . What should be the mass m₁ so that it remains at rest?

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38

Determine the tension in the string as shown in the figure. The pulleys and the string are light, while all surfaces are frictionless. Use g = 10 m/s ^2 .

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39

Consider the arrangement displayed in the figure. The pulleys and the string are light, and all surfaces are frictionless. Determine the acceleration of the mass M .

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40

Two speakers S₁ and S₂ , powered by a common amplifier, are situated at y = 1.0 m and y = -1.0 m as shown in the figure. These speakers vibrate in phase at 600 Hz . A man is standi

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41

Two speakers S₁ and S₂ , powered by a common amplifier, are situated at y = 1.0 m and y = -1.0 m as shown in the figure. These speakers vibrate in phase at 600 Hz . A man is standi

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42

Determine the acceleration of the block of mass M for the setup shown in the figure. Assume that all surfaces are frictionless and the pulleys and string are light.

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43

Determine the mass M of the hanging block shown in the figure that will prevent the smaller block from slipping over the triangular block. Assume all surfaces are frictionless and

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44

Determine the accelerations of the blocks A and B for the three situations depicted in the figure.

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45

Determine the acceleration of the 500 g block as shown in the figure.

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46

A monkey of mass 15 kg climbs a rope having one end fixed to the ceiling. What force should it apply to the rope to ascend with an acceleration of 1 m/s ^2 ? Furthermore, if the ro

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47

A monkey is climbing on a rope that passes over a smooth light pulley and supports a block of equal mass at the other end, as shown in the figure. Assume that initially both were a

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48

As shown in the figure, monkey B is holding on to the tail of monkey A, which is climbing up a rope. The masses of monkeys A and B are 5 kg and 2 kg , respectively. Given that A ca

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49

As depicted in the figure, a man of mass 60 kg stands on a light weighing machine placed inside a box of mass 30 kg . The box is suspended from a pulley fixed to the ceiling via a

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50

A block A can slide on a frictionless incline of angle and length l , kept inside an elevator travelling up with uniform velocity v as shown in the figure. Determine the time taken

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51

A car accelerates on a horizontal road with an acceleration a . Two situations are considered inside the car. First, a ball is suspended from the ceiling by a string and maintains

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52

A block rests on the floor of a stationary elevator. The elevator then begins to descend with an acceleration of 12 m/s ^2 . Determine the displacement of the block during the firs

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53

As a horse pulls a cart, the force responsible for propelling the horse forward is the force applied by

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54

When a car accelerates along a horizontal road, the force responsible for the acceleration is exerted by

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55

A body of weight w₁ is hung from the ceiling of a room via a chain of weight w₂ . The ceiling pulls the chain with a force equal to

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56

A block of mass m rests on a smooth inclined plane making an angle with the horizontal. What is the magnitude of the force exerted by the plane on the block?

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57

As depicted in the figure, a block of mass 10 kg is suspended via two light spring balances.

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58

A block of mass m is positioned on a smooth wedge having an inclination heta . The entire system is accelerated horizontally such that the block does not slip on the wedge. The mag

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59

Disregarding the effect of the earth's rotation, imagine the earth abruptly ceases to attract objects positioned near its surface. A person standing on the surface of the earth wou

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60

Three rigid rods are connected to create an equilateral triangle ABC of side 1 m . Three particles, each bearing a charge of 20 , C , are fastened to the triangle's vertices. The c

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61

A force F₁ acts on a particle, accelerating it from rest to a velocity v . Subsequently, F₁ is replaced by a force F₂ that decelerates the particle back to rest.

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62

Two objects A and B are projected upward at the same time with identical speeds. The mass of A exceeds the mass of B . Assume that air applies a constant and equal resistive force

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63

A smooth wedge A is secured inside a chamber suspended from a fixed ceiling near the earth's surface. A block B positioned at the top of the wedge requires a time T to slide down t

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64

In an imaginary atmosphere, the air applies a small force F on a particle in the direction of its motion. A particle of mass m projected upward requires a time t₁ to reach its maxi

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65

A person standing on the floor of an elevator drops a coin. The coin reaches the elevator floor in time t₁ when the elevator is stationary, and in time t₂ when it is moving uniform

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66

A free ²³⁸ U nucleus kept inside a train emits an alpha particle. When the train is stationary, a nucleus decays, and a passenger measures the separation between the alpha particle

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67

Consider a frame of reference that is fixed to the earth. Which of the following statements are correct regarding this frame?

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68

The displacement of a particle travelling along the X-axis is shown as a function of time in the figure. The force acting on the particle is zero in the region

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69

As shown in the figure, a heavy block rests on a frictionless surface and is pulled by two ropes, each having a mass m . The force applied to the left rope is removed at t = 0 , wh

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70

The force exerted by an elevator's floor on the foot of a person standing inside is greater than the person's weight if the elevator is

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71

A particle remains at rest when observed from a certain frame. We can conclude that

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72

A particle appears to be at rest when observed from a frame S₁ , and it travels with a constant velocity when viewed from another frame S₂ . Identify the valid possibilities.

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73

If the tension in the cable supporting an elevator equals the weight of the elevator, the elevator may be

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74

A particle is monitored from two reference frames, S₁ and S₂ . Frame S₂ is moving with an acceleration a relative to S₁ . Suppose F₁ and F₂ are the pseudo forces acting on the part

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75

An observer claims to have measured the acceleration of a particle to be nonzero while no force was acting on the particle.

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76

A particle remains at rest when observed from a certain frame. We can conclude that

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77

As shown in the figure, a heavy block rests on a frictionless surface and is pulled by two ropes, each having a mass m . The force applied to the left rope is removed at t = 0 , wh

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78

The displacement of a particle travelling along the X-axis is shown as a function of time in the figure. The force acting on the particle is zero in the region

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79

If the tension in the cable supporting an elevator equals the weight of the elevator, the elevator may be

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80

A particle appears to be at rest when observed from a frame S₁ , and it travels with a constant velocity when viewed from another frame S₂ . Identify the valid possibilities.

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81

Consider a frame of reference that is fixed to the earth. Which of the following statements are correct regarding this frame?

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82

An observer claims to have measured the acceleration of a particle to be nonzero while no force was acting on the particle.

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83

The force exerted by an elevator's floor on the foot of a person standing inside is greater than the person's weight if the elevator is

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84

A particle is monitored from two reference frames, S₁ and S₂ . Frame S₂ is moving with an acceleration a relative to S₁ . Suppose F₁ and F₂ are the pseudo forces acting on the part

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