Jane, whose mass is 50.0 kg, needs to swing across a river (having width D) fill

Question

Jane, whose mass is 50.0 kg, needs to swing across a river (having width D) filled with person-eating crocodiles to save Tarzan from danger. She must swing into a wind exerting constant horizontal force , on a vine having length L and initially making an angle ? with the vertical (see below figure). Take D = 46.0 m, = 108 N, L = 40.0 m, and ? = 55.0°.

(a) With what minimum speed must Jane begin her swing to just make it to the other side? (If Jane can make it across with zero initial velocity, enter 0.)

Explanation / Answer

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