Finding the mass of a block on an incline attached to a pulley

[Beachgirl1992]

Homework Statement

The two mass system shown below has the same coefficient of kinetic friction on both the horizontal and inclined surfaces. When the system released from rest, both blocks quickly reach a constant acceleration of 2.00 m/s^2. M2=5.00 kg (on horizontal. Find the mass M1 of the block on the incline. Please see attached picture!

Homework Equations

Newtons second law

The Attempt at a Solution

I am super stuck :( i tried to start working with Newtons equation but i hit a dead end! can someone help set me up pretty please :) with a cherry! I've spent and hour on this!

 

[kjohnson]

Use Newtons laws applied on each block and solve the system of equations. The easiest way would be to solve for the tension in the rope given the information for the 5kg mass...

 

[Beachgirl1992]

Hmm okay my friend and i are both stuck on this one!
How could i solve for the tension? I am trying to set up vectors its just not clicking for me

 

[Beachgirl1992]

Can i do this. A=(F-f)/m to solve for the force?!

 

[kjohnson]

Newtons laws on the top block yield:
T-f=(5kg)(2 m/s^2)
you can calculate friction 'f' so the only unknown is tension 'T'.