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In the arrangement shown in figure pulley is smooth and massless and string is light. Friction coefficient between A and B is µ. Friction is absent between A and plane. Select the correct alternative(s).

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Acceleration of the system is zero if $μ > \frac{m_{B} - m_{A}}{2 m_{B}} \tan θ$ and $m_{B} > m_{A}$

force of friction between A and B is zero if $m_{A} = m_{B}$

B moves upwards if $m_{B} < m_{A}$

tension in the string is mg $(\sin θ - μ \cos θ)$ if $m_{A} = m_{B} = m$

answer is A, B.

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Detailed Solution

For (A), whichever mass is greater will have more tendency to slid down.

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