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In this unit you will learn:

• About the turning effect of forces
• Turning effects are called moments
• Understand that regular and irregular shaped objects have a centre of gravity
• An objects centre of gravity determines if it is in a stable, neutral, or unstable equilibrium

This 20 minute YouTube video explores the differences between small and large scale agriculture and the uses of each.

In this video you will learn how to use the Pythagoras theorem.