Home
Class 9
PHYSICS
A hammer of mass 500 g, moving at 50ms^...

A hammer of mass 500 g, moving at `50ms^(-1)` strikes a nail.
The nail stops the hammer in a very short time of 0.01s.
what is the force of the nail on the hammer.

Text Solution

Verified by Experts

Mass of the harmmer , m=500 g =0.5 kg. Initial velocity of the hammer,u=50 m/s. time taken by the nail to stop the hammer t=0.01 s
Velocity of the hammer, v=o (Since the hammer finally comes to rest)
From Newton.s second law of motion
Force f=m(v-u)/t
`=0.5 (0-50)/0.01`
=-2500 N
The hammer strikes the nail with a force of -2500 N . Hence from newton.s third law of motion, the force of the nail on the hammer is equal and opposite i.e,+2500 N
Promotional Banner

Topper's Solved these Questions

  • FORCE AND LAWS OF MOTION

    CPC CAMBRIDGE PUBLICATION|Exercise ADDITIONAL QUESTIONS|20 Videos

  • FORCE AND LAWS OF MOTION

    CPC CAMBRIDGE PUBLICATION|Exercise UNIT TEST|2 Videos

  • FORCE AND LAWS OF MOTION

    CPC CAMBRIDGE PUBLICATION|Exercise EXERCISE|18 Videos

  • GRAVITATION

    CPC CAMBRIDGE PUBLICATION|Exercise ADDITIONAL QUESTIONS (MATCH THE FOLLOWING)|1 Videos

Similar Questions

Explore conceptually related problems

A driver of car moving at 20 ms^(-1) finds a child on the road 50 m ahead and stops the car 10 m earlier to the child. If the mass of the car with the driver is 1000 kg. Calculate the force exerted by the breaks on the car and the time taken to stop the car.

A bullet of mass 0.04 kg moving with a speed of 90 m s^(-1) enters a heavy wooden block and is stopped after a distance of 60 cm. What is the average resistive force exerted by the block on the bullet?

A block of mass 0.50 kg is moving with speed of 2.00 ms^(-1) on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collisions is

It is well known that a raindrop falls under the influence of the downward gravitational force and the opposing resistive force. The latter is known to be proportional to the speed of the drop but is otherwise undetermined. Consider a drop of mass 1.00g falling from a height 1.00km . It hits the ground with a speed of 50.0 ms^(-1) . What is the work done by the unknown resistive force?

A gun of mass 20kg fires a bullet of mass 0.010kg in a horizontal direction. If the gun recoils at 0.05ms^(-1) , then calculate the velocity of the bullet. If the gun has to be stopped within a period of 0.1s then what force should be exerted on the gun?

It is well known that a raindrop falls under the influence of the downward gravitational force and the opposing resistive force. The latter is known to be proportional to the speed of the drop but is otherwise undetermined. Consider a drop of mass 1.00g falling from a height 1.00km . It hits the ground with a speed of 50.0 ms^(-1) . What is the work done by the gravitational force?

A bullet of mass 10 g travelling horizontally with a velocity of 150 m s^(-1) strikes a stationary wooden block and comes to rest in 0.03 s. Calculate the distance of penetration of the bullet into the block. Also calculate the magnitude of the force exerted by the wooden block on he bullet.