Unit 5. Forces, Density and Pressure - Part 3In this tutorial we’re going to talk about forces that cause things to fall over. We talk about 2 new concepts. The first is the concept of the centre of mass of an object, and the second is the concept of the torque of a force, also known as ‘turning effect’. We also explore the principle of Moments. Finally, we revisit the idea of pressure, but this time in application to liquids.