1
Q
Gravitational force
A
Fg= (Gm1m2/R2)
2
Q
gravitational acc.
A
Ag= Gm/r2
3
Q
total mech. energy of ellipitical orbit
A
E= -GmM/2a
4
Q
total mech. energy of circular orbit
A
E= -GmM/2r
5
Q
period in terms of velocity
A
T2= 4pi2r2/v2
6
Q
period in terms of mass
A
T2= 4pi2r3/GM
7
Q
average velocity
A
V= sqrt(GM/r)
AP Physics C
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