Questions
An object is moving in a circle with constant speed. If F be the resultant force acting on the object, then the amount of work done on the object by this force is zero :
detailed solution
Correct option is C
For uniform circular motion, the centripetal force acting on the object and its instantaneous tangential displacement are always perpendicular to each other and hence the work done by the force is always zero.Talk to our academic expert!
Similar Questions
If force is always perpendicular to motion :
(i) kinetic energy remains constant
(ii) work done is zero
(iii) velocity is constant
(iv) speed is constant
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