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A body of mass m is moving in a circle o...

A body of mass m is moving in a circle of radius r with a constant speed v, The force on the body is `(mv^(2))/(r )` and is directed towards the centre. What is the work done by the force in moving the body over half the circumference of the circle?

A

`(mv^(2))/r xx pir`

B

Zero

C

`(mv^(2))/r^(2)`

D

`(pir^(2))/(mv^(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
Work done = 0, because force and displacement are perpendicular to each other.
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