In this lecture we consider deformations. We note that the applied force per
area (stress) is proportional to the response (strain). We then move on to some
simple properties of static fluids, such as density, pressure and buoyancy.

The main topics are:

- Deformation of Solids: Linear, Shear and Bulk
- Stress vs strain
- Fluids
- Density
- Pressure
- Pressure at a Depth
- Archimede's Principle