A) \[mgR\]
B) \[\frac{1}{2}mgR\]
C) \[\frac{1}{3}mgR\]
D) \[\frac{2}{3}mgR\]
Correct Answer: B
Solution :
Work done \[=\Delta U=\frac{mgh}{1+\frac{h}{R}}\] \[=\frac{mg\times R}{1+\frac{R}{R}}=\frac{mgR}{2}\]You need to login to perform this action.
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