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Simple Machines

Simple Machines. Machines. Machines make work easier. Machines allow you to use less force to do work. work and energy video 13:00 min. Levers. A lever is a long bar with a support. The fulcrum supports the weight of the bar and what the bar carries.

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Simple Machines

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  1. Simple Machines

  2. Machines • Machines make work easier. • Machines allow you to use less force to do work. work and energy video 13:00 min

  3. Levers • A lever is a long bar with a support. • The fulcrum supports the weight of the bar and what the bar carries. • The object you want to move is called the load. • The effort is a push or pull that moves the load in some way.

  4. Welcome to Discovery Education Player • (3:23 minutes)

  5. Wheel and Axle • A special kind of lever that moves or turns objects

  6. wheel and axle video 1:36min

  7. Pulley • A pulley is a wheel and axle with a a rope, wire or chain around it. • A pulley changes the direction of force—you pull down on the rope to make the load go up

  8. pulley video 2:53min

  9. Inclined Plane • An inclined plane is the same as a ramp. • Objects can be slid up or down an inclined plane to make the job easier.

  10. inclined plane video 1:28 min

  11. Wedge • A special kind of Inclined Plane • Wedges are used to split things apart • They can also be used to hold things together.

  12. Wedge Video 1:43 min

  13. Screw • A screw is also an inclined plane. If you could unwrap a screw’s threads you could see the inclined place. • Screws fasten things together.

  14. screw video 1:44 min

  15. Complex Machines • Complex Machines are Simple Machines working together.

  16. The sharp edge is a wedge The handles are levers Winding the handle is turning a wheel and axle inside

  17. Review video on all simple machines 14:36 min

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