
Concept explainers
Is the bungee jumper in equilibrium?

Answer to Problem 2Q
Solution:
He is not in equilibrium.
Explanation of Solution
Given info:
A bungee jumper momentarily comes to rest at the bottom of the dive before he springs back upward.
When the jumper falls the net force is the weight of the body, for this reason the jumper is accelerated downwards. When it reaches the bottom, there are two forces: one upwards called the tension of the rope and another pointing down which is the weight of the jumper. The jumper falls and then accelerates upwards, so the net upward force is not zero. Therefore, the jumper is not in equilibrium.
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