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MasterAsia
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Homework Statement
a 5.00 x 10^2 kg satelilite is in circular orbit 2.00 x 10^2 km above Earth's surface. calculate
a) gravitaional potential energy which i got, which is -3.13 x 10^10 J
b) kinetic energy of the satellite
c) binding energy of satellite
d) the percentage increase in launching energy required for the satellite to escape earth
Homework Equations
2GM/c^2
Eg = - GMem/re
The Attempt at a Solution
v = sqroot GM/r for the velocity then using the equation 1/2mv^2 to get the Ek, but i don't know how to get the radius so i can plug it into the Ek equation.