That's a lot of work

Classical Mechanics Level 1

Work done by athlete running in circular track of radius 200m is


The answer is 0.

Shivamani Patil by shivamani patil , 21, India

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2 solutions

Arya Haldar
Aug 31, 2014

For every instance Force is perpendicular to displacement (Since, force is tangent to the circle) Therefore, F . D C o s 90 = 0 F.D Cos90 =0 BTW, friend Shabarish , the above problem had no quote of ending at the starting point

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Shabarish Ch
Aug 30, 2014

Work done is the dot product of force vector and displacement vector. The displacement here is zero so work done is zero.

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