As defined in Chapter 7, gravitational potential energy is U = mgy and is positive for a
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As defined in Chapter 7, gravitational potential energy is U = mgy and is positive for a body of mass m above the earth’s surface (which is at y = 0). But in this chapter, gravitational potential energy U = – GmEm/r, is which is negative for a body of mass m above the earth’s surface (which is at r = RE). How can you reconcile these seemingly incompatible descriptions of gravitational potential energy?
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University Physics with Modern Physics
ISBN: 978-0321696861
13th edition
Authors: Hugh D. Young, Roger A. Freedman, A. Lewis Ford
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