Question

a body of mass 100g is rotating in a circular path of radius r with constant velocity. the work done in one complete revolution is​

Answer 1

Answer:

work done in a circle is always zero because the force and displacement vector are at an angle of 90degree to each other.

As W=F.s = Fscostheta

theta is 90 so

work done will be zero

Answer 2

Work done, W = 0

Explanation:

Mass of the body, m = 100 gm

We know that in circular motion, the work done by the object is zero as the  object is always perpendicular to its velocity and displacement i.e the angle between force and displacement is 90 degrees.

$W=Fd\ cos\theta$

$\theta=90^{\circ}$

$W=0\ J$

So, the work done in one complete revolution is​ 0 Joules. Hence, this is the required solution.

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