Equilibrium: A tightrope walker walks across a 30-m long wire tied between two poles. The center of the wire is displaced vertically downward by 1.0 m when he is halfway across. If the tension in both halves of the wire at this point is 6294 N, what is the mass of the tightrope walker? Neglect the mass of the wire.
A. 85 kg
B. 43 kg
C. 74 kg
D. 91 kg
Answer: A
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