Tarzan, whose mass is 100 kg, is hanging at rest from a tree limb. Then he lets

Question

Tarzan, whose mass is 100 kg, is hanging at rest from a tree limb. Then he lets go and falls to the ground. Just before he lets go, his center of mass is at a height 2.5 m above the ground and the bottom of his dangling feet are at a height 1.6 above the ground. When he first hits the ground he has dropped a distance 1.6, so his center of mass is (2.5 - 1.6) above the ground. Then his knees bend and he ends up at rest in a crouched position with his center of mass a height 0.5 above the ground.
(a) Consider the point particle system. What is the speed v at the instant just before Tarzan's feet touch the ground?

Explanation / Answer

the speed will be 5.6 m/sec

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