Solve Prob. 17.125, assuming that the gymnasts change places so that gymnast A jumps onto the plank while gymnast B stands at C
Prob. 17.125 The plank CDE has a mass of 15 kg and rests on a small pivot at D. The 55-kg gymnast A is standing on the plank at C when the 70-kg gymnast B jumps from a height of 2.5 m and strikes the plank at E. Assuming perfectly plastic impact and that gymnast A is standing absolutely straight, determine the height to which gymnast A will rise
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