Question

A body of mass 5 kg move in a circular path of radius 1m. Find the work done after (i) 1 complete rotation. (ii) half the rotation. (iii) 1/3 of the rotation.​

Answer 1

Answer:

half the rotation......

Answer 2

Answer:

Explanation:

M = 5kg   .    r = 1m   .    Acceleration = a   .    circumference of circle = 2.pi.r

work done = Force * displacement

(i)  = 5a * 2 . pi . r

  = 10 . a . pi . r

(II) = 5a * 1/2 (2.pi.r)

     = 5 . a . pi . r

(iii) = 5a * 1/3 (2.pi.r)

     = 10 . a . pi . r / 3

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