# Need help with homework problem

1. Sep 12, 2007

### phyzziksn00b

1. The problem statement, all variables and given/known data
In Figure 5-65, a force of magnitude 13 N is applied to a FedEx box of mass m2 = 1.2 kg. The force is directed up a plane tilted by ? = 38°. The box is connected by a cord to a UPS box of mass m1 = 5.0 kg on the floor. The floor, plane, and pulley are frictionless, and the masses of the pulley and cord are negligible. What is the tension in the cord?

2. Relevant equations
m1a=T
m2a=F-T-m2gsin(theta)
(im not sure if these are right)

3. The attempt at a solution
T=F-m2gsin(theta)
T=(13)-(1.2)(9.8)(sin38)
T=5.75982105

2. Sep 12, 2007

### l46kok

Can you please draw the free body diagram and attach it? You cannot possibly do these problems without a free body diagram (Well, that's not true, but it's a stupid idea to do these without one)

3. Sep 12, 2007

### phyzziksn00b

<img src="http://img.photobucket.com/albums/v48/CianiMoni235/FBD.jpg">

i think this is right? sorry about the weird way i drew it

4. Sep 12, 2007

### phyzziksn00b

ahh why doesn't it show up?
does it work if you just copy and paste the link into the browser?

5. Sep 12, 2007

### Kurdt

Staff Emeritus
You just hadn't used the correct tags. You could have just posted the link I suppose.