A hole is drilled to the center of the earth and a ball is dropped into it. When the ball is at the earth's center, compared with their respective values at the earth's surface,
A) its mass and weight are the same.
B) its mass and weight are both 0.
C) its mass is the same and its weight is 0.
D) its weight is the same and its mass is 0.

Question

Quizplus · Accepted Answer

At the center of the earth, the ball will experience zero gravity because the gravitational forces from all sides of the earth will cancel out each other. Therefore, its weight will become zero. However, mass is a fundamental property and does not change based on location. Therefore, the ball's mass will remain the same.

A Hole Is Drilled to the Center of the Earth