1. The problem statement, all variables and given/known data 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? 2. Relevant equations F=ma? T-Fg=ma? 3. The attempt at a solution I have no idea how to start this..