A disk and a hoop of the same mass and radius are released at the same time at the top of an inclined plane. Which object reaches the bottom of the incline first?
A) The hoop
B) The disk
C) Both reach the bottom at the same time.
D) It depends on the angle of inclination.
E) It depends on the length of the inclined surface.

Question

Quizplus · Accepted Answer

The disk reaches the bottom first because it has a smaller moment of inertia compared to the hoop, allowing it to accelerate faster down the incline.

A Disk and a Hoop of the Same Mass and Radius