A) \[{{m}_{0}}\]
B) \[2{{m}_{0}}\]
C) \[{{m}_{0}}/2\]
D) \[{{m}_{0}}/4\]
Correct Answer: A
Solution :
The block will experience maximum upward force, when the ball \[P\] is at its lowest position\[(x)\]. Energy conservation gives \[mgx=\frac{1}{2}k{{x}^{2}}or\,\,x=2mg/k\] ... (i) For the block \[Q\] to leave contact \[kx=2{{m}_{0}}g\] ... (ii) Solving Eqs. (i) and (ii), we get \[m=2{{m}_{0}}/2={{m}_{0}}\]You need to login to perform this action.
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