A smooth inclined plane of length

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics

Problem

L

, having inclination

\theta

with the horizontal, is inside a lift moving downward with retardation

a

. The time taken by a body to slide down the inclined plane from rest is (1)

\sqrt{\frac{2L}{(g+a)\sin\theta}}

(2)

\sqrt{\frac{2L}{(g-a)\sin\theta}}

(3)

\sqrt{\frac{2L}{a\sin\theta}}

(4)

\sqrt{\frac{2L}{g\sin\theta}}