Question

How does a centripetal force cause circular motion?

Answer 1

Explanation:

1. A centripetal force is a net force that acts on an object to keep it moving along a circular path.
2. An object moving in a circular motion is defined as rotating while doing so.
3. The centripetal force pushes in the direction of the curve's center, perpendicular to the object's motion. Although the object's speed is unaffected, the centripetal force causes the object's velocity to change direction.

$Workdonebycentripetalforce=centripetalforce\left(\overrightarrow{F}\right)·displacementofthebody(s⃗)$

Since the particle always moves in a circular motion in a direction perpendicular to the radial direction. The work done by the centripetal force in a circular motion is therefore always zero since the dot product is always zero.