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A machine--like pliers--is a force multiplier if we get a large force over a small distance. A machine is a

Force and distance multipliers. A machine--like pliers--is a force multiplier if we get a large force over a small distance. A machine is a distance multiplier if we get a small force over a large distance, for example, a broom. .

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A machine--like pliers--is a force multiplier if we get a large force over a small distance. A machine is a

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  1. Force and distance multipliers A machine--like pliers--is a force multiplier if we get a large force over a small distance. A machine is a distance multiplier if we get a small force over a large distance, for example, a broom.

  2. So you can either have a big force, or a big distance (but not both) ... Force multiplier: small distance, big force Distance multiplier: big distance, small force

  3. Are these force or distance multipliers?

  4. Balance What sort of objects have good balance ? What about bad balance ? Draw objects with good and bad balance (echalk?)

  5. Centre of gravity • The centre of gravity is the average location of the weight of an object.  Centre of gravity

  6. Having a low centre of gravity is good for balance • Who is easier to topple over?

  7. Make a poster about metals and their uses! • Include lots of pictures • Nice colourful poster please • Lots of examples of different metals and what sort of things they are used for ... ... And why!! If you want you can do one slide per metal, and if you finish a few slides of metals, try a non-metal element – tomorrow students can tell the class about what they have found

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