satellites

[mykg4orce1]

Most TV satellites are geostationary, meaning that they stay above one spot on the earth. At what altitude, measured from the surface of the earth, would these satellites be located? mass of earth = 5.98 x 10^24kg and radius of earth = 6.38 x 10^6m


my head hurts...with pangs of pain.

[sql_lall]

I'm not 100% certain, but i don't think it matters how far away you are.
What keeps you in a geostationary orbit is a combination of both 1) how far you are away
2) how FAST you are going

Though i haven't done it in fizix yet, so i don't have the equations

[riis]

At this site geostationary orbits are explained, including the formula.

[prog_tom]

How much does that sattelite weigh?

You can apply to formulate the expression:

F = G m1m2/r^2

Which would eventually give you:

d = sqrt(m1gGm1*5.98*10^24kg) - 6.38*10^6m

where m1 is the mass of the sattelite and d is the distance between the earth and the sattelite.

[mykg4orce1]

hey thanks guys

tom that formula reminded me of this derivation:

Mass of planet = 4pie^2r^3/GT^2

so:

r + h = distance

Mass of planet (GT^2) / 4pie^2 = (r + h)^3

now i can solve for h

[prog_tom]

Originally posted by mykg4orce1
hey thanks guys

tom that formula reminded me of this derivation:

Mass of planet = 4pie^2r^3/GT^2

so:

r + h = distance

Mass of planet (GT^2) / 4pie^2 = (r + h)^3

now i can solve for h

Yeah, it's not a formula. It's just an expression, written by Newton. It's called the Universal Gravitation Law.

[mykg4orce1]

looks like a forumla to me...

anything that has variables and you can plug values into to solve for another variable can be regarded as a forumla. Thanks for ur thoughts.

funny thing is even you yourself said:

You can apply the formula:

[prog_tom]

when did i say that?

[mykg4orce1]

thats funny tom...I dunno why u are doing this.


you edited ur post at

Last edited by prog_tom on 03-22-2003 at 12:41 PM


and look at the time of your reply:

12:42 PM


what the hell are u trying to pull?

get a life man.