Consider four spheres of equal mass and size. Which has the most potential energy?
A) a sphere on the top shelf of a bookshelf
B) a sphere rolling on the floor at the base of the bookshelf
C) a sphere sitting at rest on the floor at the base of the bookshelf
D) a sphere on the middle shelf of a bookshelf
E) a sphere that fell from the top shelf to the floor

Question

Quizplus · Accepted Answer

The sphere on the top shelf has the most potential energy because it is at the highest point relative to the floor. The potential energy of an object is dependent on its height and the force of gravity acting on it. Therefore, the sphere on the top shelf has the most potential energy as it has the greatest height above the floor.

Consider Four Spheres of Equal Mass and Size