Physics

Problem

The period of oscillation of a simple pendulum of length

L

suspended from the roof of a vehicle which moves without friction down an inclined plane of inclination

\alpha

, is given by a.

2\pi\sqrt{\frac{L}{g \cos \alpha}}

2\pi\sqrt{\frac{L}{g \sin \alpha}}

2\pi\sqrt{\frac{L}{g}}

2\pi\sqrt{\frac{L}{g \tan \alpha}}