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Homework Statement
The rope of a swing is 2.9 m long. Calculate the angle from the vertical at which a 77-kg man must begin to swing in order to have the same kinetic energy at the bottom as a 1430-kg car moving at 1.13 m/s (2.53 mi/hr).Homework Equations
ke=1/2 m v^2 w=f Δx cosθ