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

1. Apr 28, 2010

### sese

1. The problem statement, all variables and given/known data
One body whit m=50kg is pulled whit a acceleration a=2m/s2 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 $$\mu$$=0.2.Find the size of the force F.

m=50kg
a=2m/s2
$$\mu$$=0.2
$$\alpha$$=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:Ff-Fx=m*a

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

Last edited by a moderator: May 4, 2017
2. Apr 28, 2010

### rl.bhat

Re: Mechanic

Please post the full text of the problem.

3. Apr 28, 2010

Re: Mechanic

Resultant.