A) 79-4 J
B) 97.54 J
C) 105.25 J
D) none of these
Correct Answer: A
Solution :
The free body diagram of the block is as shown. Work done = force \[\times \] displacement Here, \[F=\mu R\] where, R = Mg \[\therefore \] \[W=\mu \,Mgs\] \[=0.15\times 60\times 9.8\times 0.9=79.4\,\,\text{J}\]You need to login to perform this action.
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