- #1
mathsTKK
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Homework Statement
What is the work done to place a satellite of mass 600kg which orbits the Earth at a radius of 8.00 x 10^6 m.
The Attempt at a Solution
1st attempt :
W= F x d
= GmM/(r^2) x r
= GmM/r where r is the radius of the satellite
The answer I got is 3 x 10^10 J which is incorrect.
2nd attempt :
W= F x ∆d
= GmM/(r^2) x ( r - r.E ) where r.E is the radius of the Earth
The answer I got is 6.2 x 10^9 J which is also incorrect.
3rd attempt :
W= ∆E total
= -GmM/2r - ( -GmM/2r.E )
= -GmM/2 x ( 1/r.E - 1/r )
The answer I got is 3.8 x 10^9 J which is also incorrect.
The answer for the question is 2.3 x 10^10 J.
From my three attempt, I think I haven't understand the concept of work and energy of a satellite. Can someone help me to identify my mistakes and rectify it?
I appreciate your kind assistance^^
Thank you for spending your time to read this post and help me to solve the problem ^^
Thank you once again ;)