Questions
A body of mass m is moving in a circle of radius r with a constant speed v. The force on the body is 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?
detailed solution
Correct option is B
Work done by centripetal force is always zero, because force and instantaneous displacement are always perpendicular.W = F→.s→ = Fs cosθ = Fs cos(900) = 0Talk to our academic expert!
Similar Questions
In case of circular motion of a body, if tangential force also acts on the body in addition to centripetal force, then work done.
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