Smooth Wall Reaction — Inclined Plank
5 m plank (3-4-5 triangle) leaning against a frictionless vertical wall with a worker load at midspan; all vertical load goes to the floor pin, and the frictionless wall provides only a horizontal normal reaction.
Category: frame · Difficulty: Basic
Solution
| Support | Rx (N) | Ry (N) | Mz (N·m) |
|---|---|---|---|
| A | -225 | 600 | 0 |
| B | 225 | 0 | 0 |
All reaction values are computed by the StatIQ structural engine, not generated text. Signs follow the solver's convention: a positive Ry acts upward, a negative Ry downward; a positive M is counter-clockwise.