Bungee-cord jump. A 60.5 kg bungee-cord jumper is on a bridge 49.0 m above a river. In its relaxed state, the elastic bungee cord has length L = 24.5 m. Assume that the cord obeys Hooke's law, with a spring constant of 173 N/m. (a) If the jumper stops before reaching the water, what is the height h of her feet above the water at her lowest point? (b) What is the net force on her at her lowest points (in particular, is it zero)? (a) Number (b) Number 21 Units m Units N

Bungee-cord jump. A 60.5 kg bungee-cord jumper is on a bridge 49.0 m above a river. In its relaxed state, the elastic bungee cord has length L = 24.5 m. Assume that the cord obeys Hooke's law, with a spring constant of 173 N/m. (a) If the jumper stops before reaching the water, what is the height h of her feet above the water at her lowest point? (b) What is the net force on her at her lowest points (in particular, is it zero)? (a) Number (b) Number 21 Units m Units N

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 75PQ: At 220 m, the bungee jump at the Verzasca Dam in Locarno, Switzerland, is one of the highest jumps...

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A block of mass 0.250 kg is placed on top of a light, vertical spring of force constant 5 000 N/m and pushed downward so that the spring is compressed by 0.100 m. After the block is released from rest, it travels upward and then leaves the spring. To what maximum height above the point of release does it rise?
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