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  3. 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 acce

. 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 acce

A. 5N   B. 6N   C. 10 N            D. 15N 

Best Answer

(b)

Maximum friction = μmg = 0.6 × 10 × 1 = 6N 
So, required friction force is only 5Nalthough maximum friction force available is 6N

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