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A vertically hanging bungee cord has a length of 6 m and k = 50N/m. What is the new length of the bungee if a student of mass 40 kg is suspended from the lower end?

Wt. = Mg = 40kg 9.8N/kg = 392 N.

L = 6 + (1m/50N * 392N) = 13.84 m.

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