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Tarzan plans to cross a gorge by swinging in an arc from a hanging vine (Fig. 5-42). If its wings are able to exert a force of 1150 N on the vine, what is the maximum speed it can tolerate at its lowest point of oscillation? Its mass is 78 kg and the vine is 4.7 m tall

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Answer: His weight plus the centripetal force must equal 1170 N

Explanation:

83.0 [g + (v^2 / r)] = 1170

v^2 / 18.0 = (1170 / 83.0) - 9.81

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