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Simple Machines

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BC: by: Cathy Nale Middle School Math & Science Teacher To Be! | S8P3. Students will investigate relationships between force, mass, and the motion of objects.

FC: Simple Machines

1: Levers are simple machines that let you gain an advantage that include a fulcrum, applied force, and a load. There are three classes of levers.

2: Identified by the location of the fulcrum between the effort & the force. These simple machines always moves in reverse direction of input.

3: EXAMPLES

4: Class 2 levers has the fulcrum at one end & the force at the other end

5: EXAMPLES

6: In Class 3 levers the resistance & the effort is on the same side as fulcrum.

7: EXAMPLES

8: An incline plane makes it easy to move an object from a lower to a higher elevation | A wheel & Axel moves objects across distances

9: A pulley is a device used to change the direction of force. Examples are a flagpole , elevators, sails etc.. | A screw is an incline plane wrapped around a shaft that holds things together or lifts apart.

10: An example of a wedge is an Axe. Did you know that an Axe is two inclines that do all the work? Gears are wheels that have teeth. The teeth fit together so that when one gear turns it also turns the other.

11: Rube Goldberg (1883-1970) A Rube Goldberg machine is a device that has been deliberately over engineered that performs a very simple task in a very complicated way that normally involves a chain reaction!

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