You hang by your hands from a tree limb that is a height L = 3.5 m above the ground, with your center of mass a height h = 2.6 m above the ground and your feet a height d = 1.7 m above the ground, as shown in the figure (not to scale). You then let yourself fall. You absorb the shock by bending your knees, ending up momentarily at rest in a crouched position with your center of mass a height b = 0.4 m above the ground. Your mass is M = 65 kg. You will need to draw labeled physics diagrams for the various stages in the process.
(a) What is the net internal energy change ΔEint in your body (chemical plus thermal)?