A vertical spring of force cosntant 100 ...

A vertical spring of force cosntant `100 N//m` is attached with a hanging mass of 10 kg. Now an external force is applied on the mass so that the spring is stretched by additional 2m. The work done by the force F is `(g = 10 m//s^(2))`

200 J

400 J

450 J

600 J

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