Moments and The Law of Moments
Explaining on the first sheet of notes what moments are, that is it is the twisting effect of a force, that is the force x the distance from the turning point. The turning point is sometimes called the pivot or the fulcrum.
The second sheet then explains, with examples, The Law of Moments, which is all about the balance of forces in a stable structure. The examples used are based on simple levers.
The third sheet of notes illustrates that this balance of forces applies to large and complex structures.
The final two sets of notes explain two common academic exercises, often tested in examinations, of finding the value of an unknown mass and finding the mass of a uniform beam.