Gravitational Fields Flashcards
1
Q
Define a Gravitational Field
A
A region in a space in which a particle with mass feels a force
2
Q
Define gravitational field strength
A
The force felt by a unit mass at a given radius
3
Q
State Newton’s Law of Gravitation
A
F = Gm1m2/r^2
4
Q
Derive g = GM/r^2
A
mg = GMm/r2 so g = GM/r^2
5
Q
State the equation for velocity of an orbit
A
v = -GM/r
