one last juicy question!!! (1 Viewer)

[physician]

A satellite is in orbit 250 km above the surface of the Earth. The Earth has a diameter of 12756 km. The satellite takes 89.6 minutes to complete one rotation.

( a ) Calculate the period of the orbit for a sattelite at an altitude of 500 km.


( b ) Calculate the altitude of a third satellite that has a period of 20 hours...

I think i'd be able to do the second if i found out how to do the first...

if anyone could post up the method of calculation.. it would be greatly appreciated instead of an actual answer...

once again all help is greatly appreciated... (except omelet sites... like those of pull up)

 

[Jaydels]

both parts

r^3/T^2 for the first satellite = r^3/T^2 for the second satellite

 

[physician]

yeh yeh i figured... it turned out to be a direct application question.. the only thing was changing the units.. making altitude to metres and time period to seconds...

yeh pritty staright forward.. thanks for the help anyway Jaydels

 

[Jaydels]

you're welcome
i was trying to work it out myself but it wasn't working........i forgot to change minutes to seconds

 

[xarento]

crap midcourse tomorrow, i so have no idea what to expect from this exam :S