In the arrangement shown in figure, there is a friction force between the blocks of masses m and 2m kept on a smooth horizontal surface. The mass of the suspended block is m. The block of mass 
is stationary with respect to block of mass 2 m. The minimum value of coefficient of friction between m and 2m is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Maximum acceleration due to friction of mass m over mass 2m can be 
. Now, for the
whole system,
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