Question

a girl of mass 30 kg is running along a circular path of radius 2 m with uniform speed how much work is done by the girl?(g=9.8m/s square​

Answer 1

Answer:

Mass = 30 g

Force = mass x gravity

         = 30 x 9.8

         = 294 N

         

After a complete rotation, Displacement is zero.

Displacement = 0

Work done = force x displacement

                 

                  = 294 x 0

                   = 0

Hence, no work is done by girl.

Explanation: