The length of a spring increases by 7.2 cm from its relaxed length when a mass of

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The length of a spring increases by 7.2 cm from its relaxed length when a mass of 1.4 kg is hanging in equilibrium from the spring.
(a) What is the spring constant?
(b) How much elastic potential energy is stored in the spring?
(c) A different mass is suspended and the spring length increases by 12.2 cm from its relaxed length to its new equilibrium position. What is the second mass?
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Physics

ISBN: 978-0077339685

2nd edition

Authors: Alan Giambattista, Betty Richardson, Robert Richardson

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