Physics - Center of Mass Question with Solution | TestHub

PhysicsCenter of MassCollisionMedium2 minQB

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Passage / Comprehension

A wrecking ball attached to the end of a long, light chain is released from rest, from a height H = 5 meters off the ground, as shown in the figure. At the lowest point of its swing, it collides with a piece of modern sculpture. Since the sculpture is made of wet clay, it sticks to the wrecking ball. The wrecking ball has mass 200 kg. The sculpture has mass 100 kg.

During the collision

Options:

Answer:

Solution:

considering ball and sculpture as a system, $F_{net ext} = 0 \Rightarrow$ linear momentum is conserved. Since collision is perfectly inelastic, KE of system decreases (so not A ) Velocity of ball decreses during collision ⇒ angular momentum of ball about A decreaes (so not C)

Stream:JEESubject:PhysicsTopic:Center of MassSubtopic:Collision

⏱ 2mℹ️ Source: QB

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