Two blocks of mass 20 kg is connected as shown in the figure then friction force on the block exerted by horizontal surface is (system is released from rest) (g = 10 m/s2)
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a
140 N
b
120 N
c
130 N
d
100 N
answer is D.
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Detailed Solution
Tension in each string 20g2=100NMaximum friction force cannot be greater than Applied force, so f = 100N