Asked by jane
show that theoretically the period of rotation of a satelite which circles a planet of negligible distance firm its surface depends only on the density of the planet
Answers
Answered by
Damon
G m M/r^2 = m v^2/r
so
G M/r = v^2
M = (4/3)rho r^3
G(4/3) rho r^2 = v^2
T = 2 pi r/v
v^2 = (2 pi)^2 r^2/T^2
so
G(4/3) rho = (2 pi/T)^2
so
G M/r = v^2
M = (4/3)rho r^3
G(4/3) rho r^2 = v^2
T = 2 pi r/v
v^2 = (2 pi)^2 r^2/T^2
so
G(4/3) rho = (2 pi/T)^2
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