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A spring is connected between two blocks...

A spring is connected between two blocks as shown in the diagram. Initially the blocks are held stationary and suddenly they are released. Find the ratio of maximum kinetic energy with spring compressed the block of mass m to that of mass 2m.

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The correct Answer is:
2
`p_("net") = 0 " " :.m v_1 = 2mV_2 implies (v_1)/(v_2) = 2" ":. " "(k_1)/(k_2) = (1/2 m v_1^2)/(1/2 (2m)v_2^2) = 1/2 xx (2)^2 = 2` .
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