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 of the truck is 5 m s - 2 , the frictional force acting on the block is :

Question

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 of the truck is 5 m s - 2 , the frictional force acting on the block is :, 5 N, 6 N, 10 N, 15 N

MARKS App · Accepted Answer

Maximum friction = m μ g = 0.6 × 1 0 × 1 = 6 N Pseudo force = m a = 5 N So required friction force is only 5 N although maximum friction force available is 6 N

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