Question
Question: A body of mass 1 kg is rotated in a horizontal circle of radius 1 m and moves with velocity 2m/sec. ...
A body of mass 1 kg is rotated in a horizontal circle of radius 1 m and moves with velocity 2m/sec. The work done in 10 revolutions is –
A
40 J
B
20 J
C
4 × 2π (10) J
D
Zero
Answer
Zero
Explanation
Solution
There is no change in the P.E. as well as in the K.E. therefore workdone is zero.