A body of weight 50 N is placed on a smooth surface. If the force required to move the body on the surface is 30 N, the coefficient of friction is
A. 0.6
B. 0.4
C. 0.3
D. 0.8
Answer:A
A body of weight 50 N is placed on a smooth surface. If the force required to move the body on the surface is 30 N, the coefficient of friction is
A. 0.6 B. 0.4 C. 0.3 D. 0.8