MDCAT MCQS :-

1: A body of mass "m" moving uniformly along a circular path . The work done by the body will be..........

a) maximum

b) half of the maximum

c) 1

d) zero


SOLUTION:-

      when a body moves along a circular path the centripital force comples the body to move along circular path the body covers distance "d" perpindicular to centripital force . 

W=f•d

w=fd cos90•

W=fd(0)         as cos90 =zero

w=zero

means work done along a circular path is zero.


RESULT:

     therefore option (d) is correct answer.