- #1

- 120

- 8

## Homework Statement

My title was supposed to say "

**Finding the radius of the satellites circular orbit**" but I cant seem to edit it.

**<< Mentor Note -- Title fixed for you >>**

A 500 kg satellite experiences a gravitational force of 3000 N, while moving in a circular orbit around the earth.

a) Find the radius of the circular orbit.

b)Find the speed of the satellite.

c)Find the period of the orbit.

## Homework Equations

r=√Gm

_{1}m

_{2}/g

## The Attempt at a Solution

I think I have the question set up properly but I can't figure out how to solve it on paper because my calculator won't do it. I keep getting a different answer than what the correct one is.

Part a)

r=√Gm

_{1}m

_{2}/g

r=√(6.67 x 10

^{-11})(5.98 x 10

^{24})(500)/3000

So the correct answer (at least what others are getting) is 8.15 x 10

^{6}but I am getting 148859.74. I've tried putting it into my calculator a few different ways but I can't get the right answer. Do I have to do this on paper? If so, how?

b) I need to find the answer from part a to solve part b, but I know how to set up the question.

v

^{2}=Gm

_{e}/r

v=√Gm

_{e}/r

c) Im not sure how to do part c, but I think I need to solve part b before I can do this.

Last edited by a moderator: