Two blocks B 1 and B 2 of masses m 1 and m 2 respectively are connected with the help of a pulley and string as shown. Upper surface of vehicle is smooth but vertical surface is rough.
Given a = g/7 and m 1 = 7.5 m 2 . Coefficient of friction between block B 2 and side of vehicle is
Text Solution
Verified by ExpertsThe correct answer is:
B
For equilibrium
T = m 1 a ………. (i)
and T = m 2 g + μ μ m 2 a …….. (ii)
From (i) and (ii)
m 1 a = m 2 g + μ μ m 2 a
or μ μ = 
= 
= 
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