# Force of gravity problem.

1. Mar 15, 2007

### linuxux

1. The problem statement, all variables and given/known data

Force of gravity on a spaceship is 900N. What is the force when mass is double and distance from earth center is 1/4 as far?

3. The attempt at a solution

the answer i got was 28800N, but i just applied proportionalities apparent from in the equation $$F=G\frac{M_{e}m_1}{r^2}$$ . Is it the right answer?

2. Mar 15, 2007

### chaoseverlasting

Yeah. Thats right.

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