7.
7.
Block A of mass 30 kg. is resting on a
frictionless floor. Another block B of mass
5 kg is resting on it as shown in the figure. The
coefficient of static friction between the blocks
is 0.4 while kinetic friction is 0.3. If a
horizontal force of 175 N is applied to block
B, then the acceleration of the block A will be
(g = 10 m/s2):-
► 175 N
5 kg
B.
30 kg
A
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