Below are a series of interactives which support the resource. Each interactive can be launched by clicking on its image, or through links in the PDF itself.

Some resources have pre-requisites; where this is the case, you'll be able to access any required resources through the Pre-requisites section.

- Centre of gravity
- Forces
- Moments
- Reactions
- Resolving forces on an

inclined plane

- Angles
- Trigonometric identities

Many engineered objects, such as buses, boats, diggers, pushchairs, furniture, etc. are required to be resistant to tipping over under normal use conditions. How can an engineer determine when an object will tip over?

Resources

**Mechanical:** Centre of gravity | Forces | Moments

**Mathematics:** Ratios | Algebra

**Prerequisites: ** None

Resources

**Mechanical:** Forces | Friction

**Mathematics:** Trigonometric calculations and identities

**Prerequisites: ** Forces, centre of gravity, reactions and stability

Resources

**Mechanical:** Forces | Reaction | Pressure | Moments

**Mathematics: **Algebra | Areas and volumes | Arithmetic | Integration

**Prerequisites: ** Centre of gravity, reactions and stability & Friction and sliding

Resources

**Mechanical:** Direct forces | Concurrent co-planar forces | Forces diagram | Resultant of a set co-planar forces | Conditions for equilibrium and motion | Newton's second law

**Mathematics:** Vector addition | Resolving a vector into two perpendicular components | Trigonometric functions for sine and cosine | Trigonometric identities | Simultaneous equations

**Prerequisites: **None

Resources

**Mechanical:** Displacement | Speed | Velocity | Acceleration | SUVAT equations | Distance-time graphs | Velocity-time graphs | Acceleration-time graphs

**Mathematics:** Algebra | Gradients | Graphs | Quadratic equations

**Prerequisites: ** None

Resources

**Mechanical:** Displacement | Speed | Velocity | Acceleration | SUVAT equations | Resolving a vector into perpendicular components | Projectile motion | Fluid flow rate

**Mathematics:** Algebra | Trigonometric identities| Trigonometry| Quadratic

**Prerequisites: ** Motion of a tube train - SUVAT