A rope is wrapped twice around a rough pole with a coefficient of friction $$\mu $$ . It is subjected to a force F1 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 F1 is
A. $$1$$
B. $${{\text{e}}^{4\pi \mu }}$$
C. $${{\text{e}}^{2\mu }}$$
D. $${{\text{e}}^{360\mu }}$$
Answer: Option B

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