Work Energy And Power Question 210

Question: A particle describe a horizontal circle of radius 0.5 m with uniform speed. The centripetal force acting is 10 N. The work done in describing a semicircle is

Options:

A) zero

B) 5J

C) $ 5\pi J $

D) $ 10\pi J $

Show Answer

Answer:

Correct Answer: A

Solution:

[a] $ W=Fscos90{}^\circ =zero $



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