Centripetal Forces Video Lessons

Concept

Problem: A particle in uniform circular motion requires a net force acting in what direction? A. Towards the center of the circle. B. In the direction of velocity. C. Opposite the direction of the velocity. D. Away from the center of the circle. E. Upward. F. Downward

FREE Expert Solution

The centripetal force holds objects in a curved path. It is usually directed towards the center of the circle. For uniform circular motion, the radial component of the force must always be zero (otherwise the object will speed up or slow down, resulting in non-uniform motion).

Therefore, the net force should be towards the center of the circle. Otherwise, the object will break from the circular path or its motion will become non-uniform.

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Problem Details

A particle in uniform circular motion requires a net force acting in what direction?

A. Towards the center of the circle.

B. In the direction of velocity.

C. Opposite the direction of the velocity.

D. Away from the center of the circle.

E. Upward.

F. Downward