The first condition of equilibrium states that the sum of all the forces acting on a stationary object must be equal to zero. This means that the net force acting on the object must be zero.
To verify this condition, you can follow these steps:
1. Identify all the forces acting on the object.
2. Draw a free-body diagram of the object showing all the forces acting on it.
3. Resolve all the forces into their components and add up the forces acting in the same direction.
4. Add up all the forces acting in the opposite direction.
5. Compare the two sums. If they are equal, then the net force acting on the object is zero and the first condition of equilibrium is satisfied.
Alternatively, you can use the equation Fnet = 0, where Fnet is the net force acting on the object. If the value of Fnet is zero, then the first condition of equilibrium is satisfied.