Statics of a Particle summary

Key learning points

• $\sum F_x=0$ and $\sum F_y=0$.
• Include weight, tension, normal reaction and friction as appropriate.
• A clear labelled diagram is part of the method.
• Three concurrent forces may invite Lami’s theorem if taught.

Worked example 1 — Hanging particle

Particle in equilibrium on one vertical string. Tension?

Working

Vertical balance: tension equals weight.

Worked example 2 — and

Use this method from the Statics of a Particle sheet: $\sum F_x=0$ and $\sum F_y=0$.

Working

Each key learning point matches a question type on the printable worksheet.

Worked example 3 — Include weight, tension, normal reaction and friction

Use this method from the Statics of a Particle sheet: Include weight, tension, normal reaction and friction as appropriate.

Working

Each key learning point matches a question type on the printable worksheet.

Worked example 4 — A clear labelled diagram is part of the method

Use this method from the Statics of a Particle sheet: A clear labelled diagram is part of the method.

Working

Each key learning point matches a question type on the printable worksheet.

Worked example 5 — Three concurrent forces may invite Lami’s theorem

Use this method from the Statics of a Particle sheet: Three concurrent forces may invite Lami’s theorem if taught.

Working

Each key learning point matches a question type on the printable worksheet.

Scaffolded Learning Sheet and answers (PDFs)

This page is a short, searchable overview for revision and search engines. Use the Scaffolded Learning Sheet first, then the Answers PDF for a full written solution. The printable PDFs remain the main classroom resource.