1.

A body, resting on a rough horizontal plane required a pull of 181 N inclined at 30° to the plane just to move it. It was recorded that a push of 220 N inclined at 30°° to the plane just moved the body. Estimate the coefficient of friction.

A. 0.17
B. 0.2
C. 0.5
D. 0.75
Answer» B.


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