Work, Energy and Power

Question: A block of mass m initially at rest is dropped from a height h on to a spring of force constant k. the maximum compression in the spring is x then

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1) $mgh = \frac{1}{2}k{x^2}$

2) $mg(h + x) = \frac{1}{2}k{x^2}$

3) $mgh = \frac{1}{2}k{(x + h)^2}$

4) $mg(h + x) = \frac{1}{2}k{(x + h)^2}$

Solution:

Explanation: No Explanation

WEP Conservation of Energy and Momentum

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