Question

9. A smooth inclined plane of inclination 60° is fixed in a lift which is moving down with an acceleration 'g/3'. If the base of the inclined plane is 'L', the time taken by a body released at the top of the inclined plane to reach the bottom is.​

Answer 1

Answer:

Here downward retardation means upward acceleration i.e g

′

=g+a

The acceleration of the body along incline a

′

=g

′

sinθ=(g+a)sinθ

using S=ut+(1/2)at

2

⇒L=0+(1/2)(g+a)sinθt

2

or t=

(g+a)sinθ

2L