A) \[g(\cos \alpha -\mu \sin \alpha )\]
B) \[g(\sin \alpha -\mu cos\alpha )\]
C) \[\mu cos\alpha \]
D) \[g\sin \alpha \]
Correct Answer: B
Solution :
When a body descends, the frictional free acts upwards. The free body diagram given situation is as shown in the figure.You need to login to perform this action.
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