A 40kg girl is running along a circular path of radius 1m with a uniform speed .How much work is done by the girl in completing four circles?
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Answer:
0
Explanation:
According to the mathematical formula for calculating the work done by any effort is :
W = F×D
(W= Work , F = Force and D = Displacement)
Now we all know that if we completing a journey in a circular path where the starting and ending points are same ,the total displacement will be zero.
So if we apply data we get ,into the mathematical formula:
W= F× 0 (Displacement is zero)
W = 0
The amount of work done by that girl is zero . (Answer)
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