When a satellite is a distance r from the center of the earth, the force of gravity on the satellite is f. what is the gravitational force on the satellite when it’s distance from the center of the earth is 3r? (1) f/9 (2) f/3 (3) f (4) 9f

Gravitational force on a satellite is given by the formula

now here we know that force on the satellite is F when its distance from center of Earth is R

Now the distance from the center of earth will be 3R so the force is given as

so if we compare it with initial value of force then it is

so correct answer is

the answer is 100. i just did this lesson and got a 100% on it. : )

-fishtank

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: