Gravitation Formulas Flashcards
1
Q
Law of Gravitation
A
F = G (m1m2)/ r^2
2
Q
Superpposition
A
F1 net = Σ F1n
F1 = integral of dF
3
Q
Gravitational acceleration (ag)
A
F = mag
ag = GM/r^2
4
Q
Gravitation within a spherical shell
A
F = [G (mM)/ R^3] r
5
Q
Gravitational Potential Energy (13)
A
U = - GMm/r
of a system
U = -GM1m2/r12 + -GM1m3/r13 + -GM2m3/r23
6
Q
Escape Speed
A
v = √2GM/R
7
Q
Law of Periods
A
T^2 = (4π^2/GM) r^3
8
Q
Energy Planetary Motion
A
K = GMm/2r
U = - GMm/r
9
Q
Mechanical Energy in Planetary Motion
A
E = K + U
E = -GMm/2r
10
Q
Elliptical orbit of semimajor a (energy in planetary motion)
A
E = -GMm/2a
