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Gravitation

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1
G =
6.673 x 10^-11
2
radius of earth
6.37 x 10^6
3
what is grav field strength
the grav force experienced by a point test particle of unit mass. a vector
4
grav field strength measured in
N/kg
5
Newtons law of universal gravitation
F>g = G(m1m2)/ r^2
6
Mass of earth
5.98x10^24
7
Ke=
GMm/2r
8
Change in PE =
-GMm / r
9
PE = 0 at
infinity
10
in terms of KE, PE=
-2KE
11
Total Energy =
-GMm/ 2r
12
In terms of KE, Et =
-KE
13
grav potentional measured in
J kg^-1
14
change in grav potential
-GM / r
15
V>g stands for
grav potential
16
G =
6.673 x 10^-11
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