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1. |
A rope is wrapped twice around a rough pole with a coefficient of friction ‘A . It is subjected to a force Fj at one end and a gradually increasing force F2 is applied at the other end till the rope just starts slip-ping. At this instant the ratio of F2 to Fi is_____________________? |
A. | 1 |
B. | e2* |
C. | e4* |
D. | e*72 |
Answer» C. e4* | |