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 vector F , on a vine having length L and initially making an angle with the vertical (see below figure). Take D = 45.0 m, vector F = 105 N, L = 40.0 m, and = 54.0°.

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 vector F , on a vine having length L and initially making an angle ??¸ with the vertical (see below figure). Take D = 45.0 m, vector F = 105 N, L = 40.0 m, and ??¸ = 54.0??°. (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 m/s)

Explanation / Answer

Given m=50.0kg, D=50.0m, F=115N, L=40.0m, ?1=45.0

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