A) \[\text{75}\,\text{J}\]
B) \[60\,\text{J}\]
C) \[50\,\text{J}\]
D) \[100\,\text{J}\]
Correct Answer: A
Solution :
Work done \[=\frac{1}{2}\,mgh=\frac{1}{2}\,\times 5\times 10\times 3\] \[\text{=75}\,\text{J}\]
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