A solid block ‘A’ weighing ‘Q’ kg is resting on a flat floor. A smooth cylinder ‘B’ weighing ‘P’ kg. is placed between the solid A and the vertical wall as shown in fig. The friction between the cylinder, wall and the block A is negligible. The co-efficient of friction between the block A and floor is μ. The minimum weight P required to disturb the block A is

\(\frac{{Q\left( {1 - \tan \theta } \right)}}{{\mu \tan \theta }}\)

\(\frac{{\mu Qtan\theta }}{{\left( {1 - \mu \tan \theta } \right)}}\)

\(\frac{{\mu Q}}{{\cos \theta }}\)

A solid block ‘A’ weighing ‘Q’ kg is resting on a flat floor.

1.	A solid block ‘A’ weighing ‘Q’ kg is resting on a flat floor. A smooth cylinder ‘B’ weighing ‘P’ kg. is placed between the solid A and the vertical wall as shown in fig. The friction between the cylinder, wall and the block A is negligible. The co-efficient of friction between the block A and floor is μ. The minimum weight P required to disturb the block A is
A.	\(\frac{{Q\left( {1 - \tan \theta } \right)}}{{\mu \tan \theta }}\)
B.	\(\frac{{\mu Qtan\theta }}{{\left( {1 - \mu \tan \theta } \right)}}\)
C.	μ Q cos θ
D.	\(\frac{{\mu Q}}{{\cos \theta }}\)
Answer» C. μ Q cos θ

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