Question

In case of circular motion of a body, if tangential force also acts on the body in
addition to centripetal force, then work done :
1) By both the forces is zero
2) By both the forces is positive
3) By centripetal force is zero but work done by tangential force is not zero
4) By tangential force is zero by work done by centripetal force is not zero​

Answer 1

Answer:

4

Explanation:

the angle between tangential and centripetal force is 90

Answer 2

Explanation:

(3) ans is correct bcz the work done by cetripetal fore is zero bcz of 90° angle so,

●w.d by centripetal force = f.s cos90° so,

cos90° = 0

●And by tangential force is not zero bcz in W.D done theta will be either 180° or 0° it depends tengential force is in direction of direction or to the opposite direction of direction

● I tried my best to explain it i hope you got it.