A) 5 J
B) 10 J
C) 20 J
D) None of these
Correct Answer: C
Solution :
[c] Work done by friction \[=\int{\vec{F}.\overrightarrow{ds}=\int\limits_{0}^{x}{\mu mg\cos \theta \frac{dx}{\cos \theta }=\mu mgx=20\,\operatorname{J}}}\]You need to login to perform this action.
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