You and your friends find a rope that hangs down 19 m from a high tree branch right at the edge of a wide river. You find that you can run, grab the rope, and swing out over the river. You run at 2.0 m/s and grab the rope, launching yourself out over the river.
How long must you hang on if you want to stay dry?
T= 2π√(L/g)
= 2π√(19/9.8)
= 8.37
= 8.37/2
4.37
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