25 N effort is required to slide the barrel of 1 kN. The coefficient o

1.	25 N effort is required to slide the barrel of 1 kN. The coefficient of friction is
A.	0.025
B.	0.25
C.	0.4
D.	2.5
Answer» B. 0.25

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25 N effort is required to slide the barrel of 1 kN. The coefficient of friction is

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