A) kA
B) \[kA/2\]
C) zero
D) \[{{\mu }_{s}}mg\]
Correct Answer: B
Solution :
When two blocks performs simple harmonic motion together then at the extreme position (at amplitude = A) Restoring force \[F=KA=2\,ma\,\,\Rightarrow \,\,\,a=\,\frac{KA}{2m}\] There will be no relative motion between P and if pseudo force on block P is less than or just equal to limiting friction between P and Q. \[i.e.\,\,\,m\left( \frac{KA}{2m} \right)\,\,=\,\,Limiting\,\,friction\] \[\therefore \,\,\,Maximum\,\,friction\,\,=\,\,\frac{KA}{2}\]You need to login to perform this action.
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