Moments summary

Key learning points

• Moment $=F\times d_\perp$.
• Clockwise and anticlockwise moments balance in equilibrium.
• Choose a pivot that eliminates an unknown reaction.
• Units: N·m.

Worked example 1 — Simple moment

A $12\,\mathrm{N}$ force acts perpendicularly $0.4\,\mathrm{m}$ from a pivot. Moment?

Working

Multiply force by perpendicular distance.

Worked example 2 — Moment

Use this method from the Moments sheet: Moment $=F\times d_\perp$.

Working

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

Worked example 3 — Clockwise and anticlockwise moments balance in equilibr

Use this method from the Moments sheet: Clockwise and anticlockwise moments balance in equilibrium.

Working

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

Worked example 4 — Choose a pivot that eliminates an unknown reaction

Use this method from the Moments sheet: Choose a pivot that eliminates an unknown reaction.

Working

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

Worked example 5 — Units: N·m

Use this method from the Moments sheet: Units: N·m.

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.