Universal Gravitational Potential Energy is introduced and graphed. It is compared to the force of gravity. And the “zero line” is defined.
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0:00 Intro
0:11 “Normal” gravitational potential energy
1:33 Gravitational fields
2:22 Universal Gravitational Potential Energy Equation
3:07 Comparing gravitational potential energy to force of gravity
4:12 Graphing Universal Gravitational Potential Energy
5:35 The “zero line” for universal gravitational potential energy
6:05 Can universal gravitational potential energy ever be positive?
6:49 Gravitational potential energy at the surface of the Earth
7:57 Three things to be careful of.

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