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A bob of mass 0.3 kg falls from the ceil...

A bob of mass 0.3 kg falls from the ceiling of an elevator moving down with a uniform speed of `7ms^(-1)`. If hits the floor of the elevator (length of the elevator `=` 3m) and does not rebound. What is the heat produced by the impact ? Would your answer be different if the elevator were stationary ?

A

8.82 J

B

7.72 J

C

6.62 J

D

5.52 J

Text Solution

Verified by Experts

The correct Answer is:
A
Heat produced = loss of potential energy = mgh.
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