Resultant of Two Equal Forces Acting at a Point
One of the key principles in physics is the concept of forces acting on an object. When two equal forces act at a point, the resultant force can be calculated based on the angle between the two forces.

Equal Forces
When two forces are equal in magnitude but opposite in direction, they are said to be balancing each other out. In this case, the net force acting on the object is zero, resulting in a state of equilibrium.

Resultant Force
However, when two equal forces act at a point but are not directly opposite each other, the resultant force can be calculated using the principles of vector addition. The resultant force will be the vector sum of the two forces, taking into account both magnitude and direction.

Calculation
To calculate the resultant force, you can use the parallelogram law of vector addition. Draw the two forces as vectors, with the angle between them representing the direction of the resultant force. Then, construct a parallelogram with the two vectors as adjacent sides. The diagonal of the parallelogram represents the resultant force.

Equation
Mathematically, the resultant force (R) can be calculated using the equation:
R = 2F * sin(theta/2)
Where F is the magnitude of each force and theta is the angle between the two forces.

Conclusion
In conclusion, when two equal forces act at a point, the resultant force can be calculated using vector addition principles. By understanding the magnitude and direction of the forces, you can determine the overall effect on the object and predict its motion.