Question

A block slides down a smooth inclined plane and its acceleration is found to be half the acceleration due to gravity. What is the angle of inclination \( \theta \) of the plane?

• A. \( 45^\circ \)
• B. \( 60^\circ \)
• C. \( 30^\circ \)
• D. \( 90^\circ \)

Hint:

In problems involving inclined planes, the acceleration is proportional to the sine of the angle of inclination.