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physicsluv
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Homework Statement
*Part 1*
A satellite is in a circular orbit 4000 km above
the Earth’s surface; i.e., it moves on a circular
path under the influence of nothing but the
Earth’s gravity. Find the speed of the satellite. The radius of the Earth is 6.37 x10^6 , and the acceleration of gravity at the satellite’s altitude is3.71055 m/s^2.
Answer in units of km/s
*Part 2*
Find the time it takes to complete one orbit
around the Earth.
Answer in units of s.
Homework Equations
a=v^2/r
Fc=mv^2/r
The Attempt at a Solution
For part one, I used a=v^2/r (3.71055=v^2/(6.37x10^6+4,000,000) and then converted it to km/s. I got 3.84784035 km/s which was wrong. Am i doing something wrong?
I also have no idea how to do part 2 :(
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