i just took a quiz on circular motion. I happend to remember the gravitational acceleration problem?

Question

this is the set up
Fg=(6.67 X 10^ -11)(6.0 X ^ 24)(1000kg)/(750000)2
the answer is 7.1 X 10 ^2 n (this is my question)

mass of satellite= 1000kg
distance= 750km

Answer 1

Radius of the earth is about 6380 km, so should have added that to your 750 km altitude to get the distance r between the two bodies. I get Fg = 7870 newtons.

Answer 2

no, it should look like:
Fg=(6.67 X 10^ -11)(6.0 X ^ 24)(1000kg) / ((750+6370)*1000)^2
6370km is radius of Globe