Flashcards
Gravitational fields flashcards
Cards in this deck (8)
- 1What is the force field around a mass called?Gravitational field
- 2What is gravitational field strength?Force per unit mass
g = f/m - 3What is the path called that a smaller mass in a gravitational field of larger mass would follow?Field line
(Line of force) - 4What is Newton‘s Law of Gravitation?The gravitational force F between two point masses m1 and m2 at distance r apart is given by
F = G.m1.m2/r² - 5What is equipotential?Surface in a field where the gravitational potential is constant.
- 6What is a potential gradient at a point in a gravitational field?Change of potential per metre at that point.
- 7What is gravitational potential, V, at a point?Work done per unit mass to move a small object from infinity to that point.
- 8What 3 conditions make a geostationary satellite?1. Its orbit is in the same plane as the equator
2. Its period is exactly 24hrs
3. It orbits in the same direction as the Earth's direction of rotation
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- A2 Unit 4 Physics Flashcards on Gravitational fields flashcards, created by Alex Worthington on 09/06/2015.
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- Alex Worthington
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