A 43 kg child on a 1.7 m long swing is released from rest when the swing supports make an angle of 35 degrees with the vertical. The acceleration of gravity is 9.8 m/s^2. If the speed of the child at the lowest position is 2.19561 m/s, what is the mechanical energy dissipated by the various resistive forces (e.g. friction, etc. )? Answer in units of J