# Unit 3 - Mechanical Principles of Engineering

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Looking for past exam papers?

Use the link below to access past papers and practice workbooks.

## Section 1 - Forces and Mechanical Loading

Section 1 - Forces and Mechanical Loading

## Lesson slides

Lesson slides

Forces and Mechanical loading

## Lesson slides

Lesson slides

Forces in equilibrium

## Lesson slides

Lesson slides

Stress and strain (Young's modulus)

## Revision & Practice Q's

Revision & Practice Q's

Forces and Mechanical Loading

## Section 2 - Geometry and Centroids

Section 2 - Geometry and Centroids

## 2D regular and irregular shapes

2D regular and irregular shapes

Calculating area and volume

## Volume of 3D solids

Volume of 3D solids

Formulae and practice questions

# Mass, density & volume

Mass, density & volume

Density and conversion of dimensions

## Centroids

Centroids

Lesson slides and practice questions.

## Centroids

Centroids

Worked examples on Centroids

# LO2 Revision mat.

LO2 Revision mat.

Practice calculating area, volume, mass, density and the centroids of shapes.

## Section 3 - Levers, gears and pulleys

Section 3 - Levers, gears and pulleys

# Levers, gears and pulleys

Levers, gears and pulleys

Lesson slides and practice questions

# LO3 Revision mat

LO3 Revision mat

## Section 4 - Beams (Moments and bending moment diagrams)

Section 4 - Beams (Moments and bending moment diagrams)

# Beams

Beams

Beams, moments and bending moment diagrams

## Section 5 - Dynamic systems (SUVAT and energy)

Section 5 - Dynamic systems (SUVAT and energy)

# SUVAT, energy, power, friction and momentum

SUVAT, energy, power, friction and momentum

Lesson slides and practice questions