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Machines
Simple Machines
| Term | Definition |
|---|---|
| Mechanical Advantage | The amount a force can be amplified by a simple machine to achieve a task. The amplification occurs at a cost of a trade off for distance moved or energy transferred. |
| Lever | Allows the user to apply torque to an object through the means of a long bar. |
| Incline | Without friction an incline allows the user to raise an object to a height with a force smaller than the weight of the object. |
| Wheel and Axle | Allows for simpler motion via rotation of the wheel upon the axle or by wrapping a rope around the wheel and turning the axle with a lever. |
| Wedge | Allows user to generate great force to split or lift objects |
| Pulley | Allows forces to be spread over a number of ropes depending upon the number of pulleys. This allows the user to apply less force to achieve the same result. |
| Screw | A long incline wrapped around a shaft. Good as fasteners or lifting heavy objects |
| Efficiency | The amount of energy put in compared to energy that comes out/is transferred to the final product. High efficiency = 1.00 or 100% |
| Conservation of Momentum and Energy | Energy and momentum cannot be created or destroyed. Machines cannot produce more energy than is put in but are able to use the energy more efficiently. |
| Rube Goldberg Machine | A machine that uses the simple machines to complete a simple task in a very complex way. |
Created by:
becook87
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