Gravitational potential energy
NSSDCA. n.d. ‘ Moon Fact Sheet ’ . Last Updated: 20 December 2021.
https://nssdc.gsfc.nasa.gov/planetary/factsheet/moonfact.html Quora. 2019. ‘ What is the gravitational potential energy of a system of three particles, equal masses, located in the corners of an equilateral triangle? ’ . https://www.quora.com/What-is-the-gravitational-potential- energy-of-a-system-of-three-particles-equal-masses-located-in-the-corners-of-an-equilateral-triangle Wikipedia. n.d. ‘ Gravitational Energy ’ . Last edited on 21 May, 2022. https://en.wikipedia.org/wiki/Gravitational_energy. Zhao Kaihua, Zhang Weishan. 2006. 新概念高中物理 读 本 . 107, 141. 人民教育出版社 .
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