A) \[\mu g\]
B) \[g/\mu \]
C) \[\mu /g\]
D) \[\sqrt{\mu g}\]
Correct Answer: A
Solution :
There is no friction between the body B and surface of the table. If the body B is pulled with force F then \[F=({{m}_{A}}+{{m}_{B}})\,a\] Due to this force upper body A will feel the pseudo force in a backward direction. \[f={{m}_{A}}\times a\] But due to friction between A and B, body will not move. The body A will start moving when pseudo force is more than friction force. i.e. for slipping, \[{{m}_{A}}a=\mu \ {{m}_{A}}g\] \[\therefore \] \[a=\mu \,g\]You need to login to perform this action.
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