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Homework Statement
A bungee jumper of mass m kg jumps from 20 meters. The bungie cord's spring constant is k N/m. Let y = 0 be the point where the bungee cord begins to become taught, and let y = 20 be the jump point.
It is known that the point of maximum acceleration is y = -17.
Question: What is the value of the maximum acceleration?
Hint: The acceleration is not equal to gravity.
2. The attempt at a solution
F = ky - mg = ma
a = (ky - mg)/m [FAILS!]
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