A body of mass m is moving in a circle of radius r with a constant sp

1.	A body of mass m is moving in a circle of radius r with a constant speed v . The force on the body is mv2/r and is directed towards the centre. What is the work done by this force in moving the body over half the circumference of the circle(a) mv2/r x πr(b) Zero(c) mv2/r2(d) πr2/mv2
Answer» Correct Option (b) Zero Explanation: Work done by centripetal force is always zero.

A body of mass m is moving in a circle of radius r with a constant speed v . The force on the body is mv2/r and is directed towards the centre. What is the work done by this force in moving the body over half the circumference of the circle(a) mv2/r x πr(b) Zero(c) mv2/r2(d) πr2/mv2

Answer»

Correct Option (b) Zero

Explanation:

Work done by centripetal force is always zero.