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# A body of mass m is is suspended to an ideal spring of force constant k. The expected change in the position force F acting vertically downwards is :

$\begin {array} {1 1} (a)\;\frac{3F}{2k} & \quad (b)\;\frac{2F}{k}\\ (c)\;\frac{5F}{2k} & \quad (d)\;\frac{4F}{k} \end {array}$

$(B)\;\frac{2F}{k}$