Gravitational Fields

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Last updated 7:13 PM on 9/23/26
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5 Terms

1
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Why don’t we notice gravitational forces between objects on Earth

Gravitational force between objects r very small because grav constant is small


Force of 10power-9 is negligible compared to earth grav force acting on object


Far too weak to overcome opposing forces like friction between object and ground

2
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Newtons Law of Gravitational

attractive forces between point masses

Proportional to masses

Inversely proportional to square of distance apart

3
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Define grav field strength

Force per unit mass, vector

4
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State and explain use for satellite travelling in orbit

GPS - several satellites needed to fix position on Earth


5
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define gravitational potential at point in grav field

Work done per unit mass in moving mass from infinity to point