# Homework Help: 2 masses, pulley on a frictionless incline

1. Oct 21, 2008

### epyon346

http://img530.imageshack.us/my.php?image=hrwc5f51km4.gif
A 1.7 kg mass, m2, on a 30.5° incline is connected to a 6.4 kg mass, m1, on a horizontal surface. The surfaces and the pulley are frictionless. If F = 13.3 N, what is the magnitude of the tension in the connecting cord?

I've tried solving this by examining all the forces on both of the masses, but I can't seem to get it right (the homework is online through LON-CAPA). We haven't done anything relating to tension in class, and the book is somewhat unclear. A step in the right direction would be greatly appreciated.

EDIT: It appears that the image isn't working, so to make it clear, mass 2 is sitting on an incline (not off the edge) of 30.5 degrees and the pulley is in bottom of the incline while mass 1 is on a horizontal surface.

2. Oct 21, 2008

### jenglish

I wish I could help, but the value of "F" listed above as 13.3 N seems a bit vague, what exactly is that referring to?

3. Oct 21, 2008

### epyon346

Wow, sorry I forgot to mention that. Wish the picture worked.

The force of 13.3 N is pulling mass 2 up the incline parallel to the incline itself.