. A block of mass 1 kg lies on a horizontal surface in a truck
The coefficient of static friction between the block and the surface is 0.6. If the acceleration on the truck is 5 m/s2 , the frictional force acting on the block is
A. 5N
B. 6N
C. 10N
D. 15N
Best Answer
Ans: B
Sol: Maximum friction = mmg = 0.6 × 10 × 1 = 6N
So, required friction force is only 5Nalthough maximum friction force available is 6N.
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