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Jane, Whos mass is 60kg, needs to swing to tarzan accrost a gap of 50m. There is a constant Horizontal force of 210N,caused by wind, opposing her. The length of the vine is 35m and the ange from were the vine is tied to jane is 50. what min speed must jane swing in order to get to tarzan and once there what speed must she use to get back with tarzan's 85kg weight added

I need help, i cant even figure out a basic equation to start with