For a 2-meter solar panel with uniform weight distribution, the optimal support position would be approximately at the center of gravity - around 1 meter from either end. Here's the reasoning: Structural Analysis: - Placing the post at the midpoint (1m mark) minimizes both sagging and bending moments - This creates equal cantilever lengths on both sides - The lower end anchored to soil provides additional stability However, practical considerations: - If wind load is significant, moving the post slightly toward the raised end (maybe 1.1-1.2m from bottom) can help - This reduces the moment arm for wind forces - The anchored lower end already provides good resistance For a 20kg uniform load, centering the support at 1m from the bottom end would give you the most balanced distribution and least deflection overall.