Can a centripetal force ever do work on an object? Explain.
No, because work in physics is multiplication of the component of the force in the direction of where the object moves and the distance this object makes. Being that centripetal force is by definition normal on the trajectory of an object, the answer is no.
Step 1 of 3 </p>
By the application of force, the body may move in the direction of force or in other direction. The total work done is the dot product of forceand the displacement :
where is the angle between the force and the displacement.
Step 2 of 3 ~
Sketch the diagram:
The following diagram shows the uniform circular motion of a particle.