Problem in a broadway performance an 659-kg actor swings, Ask an Expert

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Problem: In a Broadway performance, an 65.9-kg actor swings from a 3.30-m-long cable that is horizontal when he starts. At the bottom of his arc, he picks up his 55.0-kg costar in an inelastic collision.

Part A: What maximum height do they reach after their upward swing?

Please explain how you came to your conclusion.

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