(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

One body whit m=50kg is pulled whit a acceleration a=2m/s^{2}on an horizontal plane whit an unknow force F which is making whit the plane an angle of 30 degree

The friction coeficient betwen the body and plane is [tex]\mu[/tex]=0.2.Find the size of the force F.

m=50kg

a=2m/s^{2}

[tex]\mu[/tex]=0.2

[tex]\alpha[/tex]=30

I need to find the size of force acting on the body

http://img11.imageshack.us/img11/7561/61868200.png" [Broken]

2. Relevant equations

3. The attempt at a solution

Well i tried to calculate the force whit Newton's formula F=m*a;

Then whit force compontents on Ox,Oy

Oy:N-G-Fy=0

Ox:F_{f}-Fx=m*a

But my question is "size of force acting on the body" is Fx?!or Fy?!

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# Homework Help: Find the size of force acting on the body

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