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Conservation of Momentum

92. In figure...

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92. In figure a heavy ball of mass 2m rests on the horizontal surface and the lighter ball of mass m is dropped from a height h >2l. At the instant the string gets taught, the upward velocity of the heavy ball will be?

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Q. In the figure shown, the heavy ball of mass

2 m

rests on the horizontal surface and the lighter ball of mass

m

is dropped from a height

h > 2 l

. At the instant, the string gets taut, the upward velocity

(in m/s)

of the the heavy ball?

(G i v e n : l = 3.6 m)

.

Q. A steel ball of mass 0.5 kg is dropped from a height of 4 m on to a horizontal heavy steel slap. the strile the slap and reounds to its original height.
(a) calculate the impulse delivered to the ball during impact.
(b) if the ball is in contact with the slab for 0.002 , find the average reaction force on the ball during impact.

Q. E-4 A steel ball of mass 0.5 Kg is dropped from a height of 4 m on to a horizontal heavy steel slab.The ball strike the slab and rebounds to its original height

(t a k e g = 10 m / s e c^{2})

(a) calculate the impulse delivered to the ball during impact.
(b) if the ball is in contact with the slab for 0.002s,find the average reaction force on the ball during impact.

Q. A ball of mass

1 kg

strikes a heavy platform, elastically, moving upwards with a velocity of

5 m/s

. The speed of the ball just before the collision is

10 m/s

downwards. Then the impulse imparted by the platform on the ball is (in

N-s

Q. A ball is moving with velocity

5 m/s

towards a heavy wall which is at rest as shown in figure. Assuming collision to be perfectly elastic, find the velocity of the ball immediately after the collision.

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