A disk and a hoop of the same mass and radius are released at the same time at the top of an inclined plane. If both are uniform, which one reaches the bottom of the incline first if there is no slipping?
A) The hoop
B) The disk
C) Both reach the bottom at the same time.

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