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Homework Statement
I uploaded a picture with the problem from the textbook and its solution
Homework Equations
The relevante equations are in the attsmpt at a solution
The Attempt at a Solution
First of all, i understood the solution from the solution manual, but in my solution the only thing that is different is that i choose the positive x direction to be upwards the ramp , which is the oposite direction choosen in the solution manual
With said, i got the following equation for the NET force on each box
T-m1•g=m1•a
T-m2•g•sin55=m2•a
Doing the álgebra, i get a=-7.4, which is in the same direction as the a from the solution, but with a different magnitude, so my question is, are my 2 equations above wrong?