# Free Body Diagram?

MagLok

## Homework Statement

http://img258.imageshack.us/img258/7172/testiiifo2.jpg [Broken] Here is an image of the problem (taken from a practice test.)

F=ma

## The Attempt at a Solution

I drew the free body diagrams for each, but I have no idea what the equation would be. I came up with equations for each mass, and solved for a in one, plugged into the other and got this.

Tension Force (string, m2) - Grav Force (earth, m2)=M2*((-tension force string, M1)/m1)

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MagLok
If this is not descriptive enough, please let me know and I'll run to my friend's house and scan my work.

Runelord
Well, if you draw the free body diagram for figure 2, you simply have for each part, the one sitting on the table is:

Tension = m1 * a

The one hanging is:

mg - Tension = m2 * a

Plug in for the tension:

mg - m1 a = m2 * a
mg = (m1+m2) a
a = m/(m1+m2) * g

So you would need to plot m/(m1+m2) on the x axis. Hope this helps.

MagLok
Yes, thank you much Runelord :-D