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 JB. 7.72 JC. 6.62 JD. 5.52 J

A bob of mass 0.3 kg falls from the ceiling of an elevator moving down

1.	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 JB. 7.72 JC. 6.62 JD. 5.52 J
Answer» Correct Answer - A Heat produced = loss of potential energy = mgh.

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