- #1
charlie05
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- 6
Homework Statement
Satellite m=3 000kg, circular orbit at the height h = 300km above the Earth´s surface.
a/ calculate energy ( work ) for delivering satellites into orbit ?
b/ during 1 month the satellite approached the Earth of Δh=13,8 km. Prove that the radial component of velocity in comparison with the tangential component is insignificant.
c/ What the average resistance force is applied to the satellite during flight?
Homework Equations
I know: RE = 6 370 km...radius of the Earth
ME = 5,98 .1024 kg...mass of the Earth
G = 6,67 . 10 -11 Nm2kg-2...gravitational constant
The Attempt at a Solution
a/[/B]
W = Ep1 - Ep0
W = - (G*ME* m) / 2( RE + h) - (- (G*ME* m) / RE
W = G*ME* m * (( RE+2h)/ 2RE( RE +h))
with numbers: W = 9,81 . 1010 J