Question

A 52.0 kg boy jumps from a window and lands in a fire rescue net 12.5m below the window. He momentarily stops when he has stretched the net by 1.40 m. Assuming that mechanical energy is conserved during this process and that the net functions like an ideal spring, find the elastic potential energy of the net when it is stretched by 1.40 m .

Show work and explain

Answer 1

Mass of the boy,

Initial vertical height difference between the net and the boy,

Distance by which the net stretches,

Vertical height covered by the boy before stopping,

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Find the elastic potential energy of the net when it is stretched by 1.40 m.

When the boy momentarily stops after jumping and the net is stretched 1.40m, the initial potential energy of the boy is fully converted into elastic potential energy of the net.

ANSWER:

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