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The figure shows an L shaped body of mass M is placed on smooth horizontol surface. The block A is connected to the body by means of an inextensible string, which is passing over a smooth pulley of neglegible mass. Another block B of mass m is placed against a vertical wall of the body. Find the minimum value of the acceleration of block A so that block B remains stationary relative to the wall. Coefficient of friction between the block B and the vertical wall is µ=2. (g=10m/s 2 )

The figure shows an L shaped body of mass M is placed on smooth horizontol surface. The block A is connected to the body by means of an inextensible string, which is passing over a smooth pulley of neglegible mass. Another block B of mass m is placed against a vertical wall of the body. Find the minimum value of the acceleration of block A so that block B remains stationary relative to the wall. Coefficient of friction between the block B and the vertical wall is µ=2. (g=10m/s2)


2116_67954_mech.jpg

Grade:11

1 Answers

Himanshi
13 Points
6 years ago
Let acceleration of block A be "a" so will be the acceleration of block B
Normal on block B will be equal to Mb(mass of B)*a
Therefore friction = uN = 2(Mb*a)=Mb*g
            Therefore a= g/2=5m/s^2

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