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I am so glad I found this forum

I just have this one quesiton that I need help with:

two circus performers, Jack and Jill, whose total mass is 120 Kg, start a swing which is 5.0 m long such that initially the rope attatched to their swing makes an angle of 36 degrees with the horizontal. At the bottom of the arc, Jack, whose mass is 65 Kg, steps off. What is the maximum height of a landing ramp that Jill can reach as the swing continues?

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