Q.

A body of mass ‘m’ is released from rest on an inclined plane in an elevator (moving up with acceleration a0). Find the time taken by the body to reach the bottom of the inclined plane.

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a

L(a0+g)sin α

b

t=2L(ao+g)sinα

c

3L(ao+g)sinα

d

2L(ao+g)sinα

answer is B.

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Detailed Solution

if the elevator is going up with an acceleration ao pseudo force acts downward ma0 effective downward acceleration along the inclined surface is (a0+g) sinαt=2L(g+ao)sinα
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