TOPIC 5


Mechanical systems and control In this topic, you will be looking at a variety of issues related to mechanical


systems. You need to understand how the systems work so that you can effectively use them in your design projects. You will also examine the mining industry, its development and its effect on the lives and communities of the people in South Africa.


Revise levers and gears • Levers • Gear systems


Mechanical advantage calculations • Multiplication of effort • Mechanical advantage calculation for levers


• Mechanical advantage calculations for gears


Mechanical systems


and control


Investigation skills • Mining South Africa’s resources


Representing gears graphically • Sketching gears • Systems analysis: bicycle gear system


• Systems diagrams • Mechanical systems


Topic 5 Mechanical systems and control 99


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