d y d y dy
dv dv dv r r r r
v v
y x c c e c ve c x c c x
k
mP
m k
x x x x
RGM
gR
yg GM
L R L
L
p R GM
x n
pn
p x
x
n
L p np
x t
S
F kx W mg
m r h
F r hg r g x x t
ma F
c
x t c t c t
g
hp
x t A A
A h
r x
r
r
M M
R
r
r
GM m
Frr
GMm
F r
R
GM g
R R r
mr F
g
r r
R
mv
R
mg
mv mg
r t R t
v gR
t r t
r r r r r
x x
t t
x t c e c e t t
x t e e
r r r
i
r i x x
t
x t e A t B t A B
t
x e
x t
u t
r r r
x x
t t
x t c e c e t t
x t e e
rr i
r r r
x x
t t
x t c e c e t t
x t e e
rr i
x x
r r r
x x
t
x t c c t e t
x t e t
rr i
x x
r r r i
x x
t
x t e A t B t
r r i
r r r i
x x
r r i
x x
r r r i
x x
t
x t e A t B t
r r r i
x x
t
x t e A t B t
r r i
x x
m c k
x x x r r
r i x x
t
x t e A t B t
mk
pt
x t e A t B t
pt
x t Ce t
pt pt
x t pCe t C e t
p
t
x t
t t t t
x x
r r r
x x t
x t c c t e
t
x t te
n
r r n
r
x x
n
r r n
r i
x x
n
n t n t t
n
n n n
t
x t e t te te
t