A man is standing on a cart of mass double the mass of man. Initially cart is at rest. Now man jumps horizontally with relative velocity $'u'$ with respect to cart. Then work done by internal forces of the man during the process of jumping will be :
A man is standing on a cart of mass double the mass of man. Initially cart is at rest. Now man jumps horizontally with relative velocity $'u'$ with respect to cart. Then work done by internal forces of the man during the process of jumping will be :
- A
$\frac{1}{2}\,mu^2$
- B
$\frac{3mu^2}{4}$
- C
$mu^2$
- D
$\frac{mu^2}{3}$
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