# Mechanics

> Forces and motion principles

- Skill: `ffsshhttiikk/mechanics` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ffsshhttiikk/mechanics`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ffsshhttiikk/mechanics/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: ffsshhttiikk (https://skillmd.com/u/ffsshhttiikk)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/ffsshhttiikk/mechanics

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## What I do
- Analyze static equilibrium and structures
- Calculate stresses and strains in materials
- Solve dynamics problems for particles and rigid bodies
- Model energy and work relationships
- Analyze simple machines and mechanisms
- Apply impact and impulse momentum concepts

## When to use me
When analyzing structures, designing mechanical systems, or studying motion under forces.

## Key Concepts
- **Static Equilibrium**: ΣF = 0, ΣM = 0 for non-moving systems
- **Stress-Strain**: σ = F/A, ε = ΔL/L, Hooke's law σ = Eε
- **Work-Energy**: W = ∫F·ds, kinetic energy T = ½mv²
- **Impulse-Momentum**: J = ∫Fdt = Δp
- **Simple Machines**: Mechanical advantage MA = F_out/F_in
- **Centroid**: Geometric center for area/mass calculations