A) 0
B) 2 MH
C) - MH
D) -2 MH
Correct Answer: A
Solution :
\[\operatorname{W}=-MH\left( cos{{\theta }_{f}}-\,\,cos{{\theta }_{i}} \right)\] \[=-MH\,\left( cos360{}^\circ -cos\,\,0{}^\circ \right)=0\]You need to login to perform this action.
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