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thelightsare
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Homework Statement
Planet X has a mass of 6.42x10^20 kg and a radius of 2400km. A satellite with a mass of 1500kg is in orbit around Planet X at an altitude of 300km.
a) what is the Force of Gravity?
b) What is the acceleration of the satellite while in orbit?
c) Find the speed of the satellite in orbit.
d) Find the period of the satellite.
Homework Equations
F = GMm/r^2, maybe f=ma , a = v^2/r?, T= 2 pi r/v
The Attempt at a Solution
a)
F=GMm/r^2
F=6.67e-11*6.42e23*2000/(3400+300)^2
F[tex]\approx[/tex]6.26e9 N ?
b) very unsure but can you use
f=ma
6.26e9 N=2000a
and solve for a or is tht wrong? I was also maybe thingking of using
c) v = ?
could you use a = v^2/r
a(take answer from b) = v^2/(3400+300) and solve for v
or is this the wrong equation or wrong values?
d)T= 2 pi r/v
T = 2 pi (3400+300)/v(answer from c) ?
Thanks!