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Tarzan, who has a mass of 85.0kg, is going to cross a gorge by swinging in an arc from a 4.0m long hanging vine. If his arms are capable of exerting a force of 1500N on the rope, what is the maximum speed he can tolerate at the tolerate at the lowest point of his swing?

  • Physical -

    Remember that he has to support his own weight in addition to the centripetal force at the lowest point:
    mv²/r + mg = 1500N
    Solve for v.

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