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  • A particle of mass m = 100 gm rotated in a circle of radius r with a constant speed 5 m/s. Find out work (in Joule) done by tension force when complete five rotations  <div class

A particle of mass m = 100 gm rotated in a circle of radius r with a constant speed 5 m/s. Find out work (in Joule) done by tension force when complete five rotations

 

Option: 1

50


Option: 2

100


Option: 3

0


Option: 4

150


Answers (1)

best_answer

As we have learned

Zero Work -

\Theta = \frac{\pi }{2}

- wherein

Force and  displacement vectors are Perpendicular to each other

 

 W = FS \cos \theta

as Tension force T is always perpendicular to dispalcement so \Theta = \frac{\pi }{2} 

\cos (\pi /2 ) = 0

So work done by tension force will be zero 

 

Posted by

himanshu.meshram

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