Finding Tension when Mass Accelerates

[allielove13]

Homework Statement

A mass of .500 kg is resting on the ground. Attached is a cord that makes a 30-degree angle with the horizontal. It is found that when the cord is pulled tight enough, the mass will skip along the ground without friction. How much tension is in the cord?

Homework Equations

F=ma?
T-Fg=ma?

The Attempt at a Solution

I have no idea how to start this..

 

[kellenm]

Start with the sum of forces in the x and y direction.

 

[allielove13]

Start with the sum of forces in the x and y direction.

So $$\Sigma$$Fx=Tcos30
and $$\Sigma$$Fy=Tsin30-Fg
?

 

[kellenm]

Yeah that's right. Is this at a constant speed? Meaning no acceleration?