A 47 kg child on a 1.5 m long swing is released 5 from rest when the swing supports make an angle of 22 ◦ with the vertical. the acceleration of gravity is 9.8 m/s 2 . if the speed of the child at the lowest position is 1.30868 m/s, what is the mechanical energy dissipated by the various resistive forces (e.g. friction, etc.)? answer in units of j.
