A large metallic box of mass 45 kg rests on a wooden floor. A force of 185 N is found to be just sufficient to start it moving across the wooden floor. Then the coefficient of static friction between the metallic box and the wooden floor is nearly (take g = 10 m/s2)

A large metallic box of mass 45 kg rests on a wooden floor. A force of

1.	A large metallic box of mass 45 kg rests on a wooden floor. A force of 185 N is found to be just sufficient to start it moving across the wooden floor. Then the coefficient of static friction between the metallic box and the wooden floor is nearly (take g = 10 m/s2)
A.	0.41
B.	0.19
C.	0.45
D.	0.24
Answer» B. 0.19

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A large metallic box of mass 45 kg rests on a wooden floor. A force of 185 N is found to be just sufficient to start it moving across the wooden floor. Then the coefficient of static friction between the metallic box and the wooden floor is nearly (take g = 10 m/s2)

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