# Solving For A Variable

1. Sep 9, 2007

### honphysics12

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

Solve for m1: f= Gm1m2 / r squared

3. The attempt at a solution

How do you solve this?

2. Sep 9, 2007

### rocomath

where is your attempt?

work must be shown b4 we can help, thanks!

3. Sep 9, 2007

### honphysics12

I have no idea how to solve it.

4. Sep 9, 2007

### rocomath

here's a hint: Gm1m2 is simply G times m1 times m2

now what would your steps be?

5. Sep 9, 2007

### symbolipoint

Are you kidding? This is very simple algebra. Do you know that for any real numbers a and k, both of them not equal to zero, a*(1/k)*k=a ?

You want m1, but you have it on the right-hand side being multiplied by Gm2/(r^2)

(the digits shown in your equation must be assumed as subscripts; if we use TEX or LaTex, we could show that more clearly)

6. Sep 9, 2007

### neutrino

Or by using these tags
- Subscript
- Superscript

The corresponding end tags have a forward slash (/) in front of sub and sup.

Examples: m1 m2

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