Question

A block a is able to slide on the frictionless incline of angle theta and length l,kept inside an elevator going up with uniform velocity v find the time taken by the block to slide down the length of the incline if released from rest what would be the time taken if the elevator is accelerated at a m/s sq

Answer 1

If 'a' be the acceleration of 'A' down the plane then it's equation of motion is mg sin theta = ma

=> a = g sin theta

1 / 2 g sin theta t^2 = L => t root 2l/ g sin theta

Answer 2

See the attachment for the answer