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Problem

A person is doing bungee jumping from a 100m platform. Let's say that the rubber cord's coefficient is k = 6500 g/s^2. Would a 60 kg person hit the ground when jumping using that rubber cord?

The two equations that are given to use are Force - -(spring constant)(elongation) and Hanging mass *gravity = spring constant * elongation.

I'm not really sure which formula to use. I think the spring constant is k=6500 and I have done this 60*980 = 58800 but have drawn a blank.

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# What elasticity formula to use

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