A regular hexagon of side length a experiences forces of magnitude P acting on each side. The equivalent force system of these forces can be found at point B in the center of the hexagon. A fresh-water channel with a 60-degree V-section is closed by a triangular plate A. The height h of the point on plate A where the resultant force R acts can be calculated.

1. Consider the forces of magnitude P acting on the sides of a regular hexagon of with each side
of length a. Find the equivalent force system of these forces at point B as shown in the
figure.

2. Question 2
The end of a fresh-water channel with a 60-deg V-section is closed by a slanted triangular
plate A. Calculate the height h of the point on A through which the resultant R acts.