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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. | |