COMEDK2013PhysicsWork, Power and Energy
When a body moves in a circular path, no work is done by the force since
Options
- Aforce and displacement are perpendicular to each other
- Bthe force is always away from the centre
- Cthere is no displacement
- Dthere is no net force
Correct answer
A. force and displacement are perpendicular to each other
Step-by-step solution
In a circular path, the centripetal force acts towards the centre of circle and the displacement is along the tangent to the circle. Hence, =90^ Work done W= F s =F s =F s 90^ =0