Impulse in Collsion Caveat's
Trending Questions
Q. A large block of wood of mass M =5.99 kg is hanging from two long massless cords. A bullet of mass m=10 g is fired into the block and gets embedded in it. The (block + bullet) then swing upwards, their centre of mass rising a vertical distance h=9.8 cm before the (block + bullet) pendulum comes momentarily to rest at the end of its arc. The speed of the bullet just before collision is: (take g=9.8 ms−2)
- 831.4 m/s
- 841.4 m/s
- 811.4 m/s
- 821.4 m/s
Q. A block of mass m and a pan of equal mass are connected by a string going over a smooth light pulley as shown. Initially the system is at rest when a particle of mass m falls on the pan and sticks to it. If the particle strikes the pan with a speed v, the speed with which the system moves just after collision is
- v5
- v2
- v3
- v4
Q. A ball of mass 0.45 kg is heading towards a wall with a speed of 25 m/sec. After hitting the wall the ball bounces back with a speed of 20 m/sec. The ball was in contact with the wall for 0.003 seconds. What is the average force the wall exerts on the ball?
- 760 N
- 3000 N
- 3750 N
- 6750 N
Q. A body of mass 4kg is acted on by a force which varies as shown in figure. The momentum acquired is:
- 280N−s
- 140N−s
- 70N−s
- 210N−s
Q. A shell of mass m moving with velocity v suddenly breaks into 2 pieces. The part having mass m4 remains stationary. The velocity of the other part will be:
- v
- 2v
- 34v
- 43v
Q. A block of mass m and a pan of equal mass are connected by a string going over a smooth light pulley as shown. Initially the system is at rest when a particle of mass m falls on the pan and sticks to it. If the particle strikes the pan with a speed v, the speed with which the system moves just after collision is
- v3
- v4
- v5
- v2
Q. A block of mass m=1 kg and a pan of equal mass are connected by a string going over a smooth light pulley as shown in the figure. Initially the system is at rest when a particle of mass 1 kg falls on the pan and sticks to it. If the particle strikes the pan with a speed v=3 m/s. Find the speed with which the system moves just after collision
- 4 m/s
- 3 m/s
- 2 m/s
- 1 m/s
Q. A system of two blocks A and B are connected by an inextensible massless string as shown in figure. The pulley is massless and frictionless. Initially, the system is at rest. A bullet of mass 'm' moving with a velocity 'u' as shown hits block 'B' and gets embedded into it. The impulse imparted by tension force to the block of mass 3m is :
- 5mu4
- 4mu5
- 2mu5
- 3mu5
Q. What is the meaning of static procedure of measuring force?
Q. A block of mass m and a pan of equal mass are connected by a string going over a smooth light pulley as shown. Initially the system is at rest when a particle of mass m falls on the pan and sticks to it. If the particle strikes the pan with a speed v, the speed with which the system moves just after collision is
- v3
- v4
- v5
- v2
Q. A block of mass m and a pan of equal mass are connected by a string going over a smooth light pulley as shown. Initially the system is at rest when a particle of mass m falls on the pan and sticks to it. If the particle strikes the pan with a speed v, the speed with which the system moves just after collision is
- v3
- v4
- v5
- v2