I use a rope 3.50 m long to swing a 10.8-kg weight around my head.The tension in the rope is 8.25 N.In half a revolution how much work is done by the rope on the weight?

Question

Quizplus · Accepted Answer

The work done by the rope on the weight is zero because the direction of the tension force is perpendicular to the direction of motion of the weight. In circular motion, the tension force acts towards the center of the circle (centripetal force) and does not do work on the object since the object's displacement is perpendicular to the force.

I Use a Rope 3