Fundamentals of Physics Extended 12th Edition · Potential Energy and Conservation of Energy · Problem 127
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Halliday, Resnick & Walker — Potential Energy and Conservation of Energy: Problem 127
Bungee-cord jump. A 61.0 kg bungee-cord jumper is on a bridge 45.0 m above a river. In its relaxed state, the elastic bungee cord has length \( L = 25.0 \text{ m} \). Assume that the cord obeys Hooke’s law, with a spring constant of \( 160 \text{ N/m} \). (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)?
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주어진 조건: . A, 61.0 kg, 45.0 m, . In
구하는 것: (a) If the jumper stops before reaching the water; (b) What is the net force on her at her lowest points
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Fundamentals of Physics Extended · 12th Edition
저자: Halliday, Resnick & Walker
출판사: Wiley
단원: Potential Energy and Conservation of Energy