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Definition
| "The perplexity of Life arises from there being too many interesting things in it for us to be interested properly in any of them." |
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Definition
| a non-powered mechanical device that changes the direction or magnitude of a force |
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| a simple machine that allows us to raise objects little by little instead of all at once |
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Definition
| a special type of inclined plane that can convert a rotational movement into a vertical movement |
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Definition
| a simple machine made out of two inclined planes placed back to back |
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Definition
| a long board or rod that rotates around a fulcrum |
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Definition
| a sturdy object or surface that the board rotates around |
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Definition
| levers in which the fulcrum is between the force and the load |
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Definition
| levers in which the fulcrum is on one end and the load is between the force and the fulcrum |
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Definition
| Levers in which the fulcrum is at one end, the load is at the other, and the force is in the middle |
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Definition
| The "drag" that we feel when we move objects across each other |
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Definition
| - converts work that would otherwise involve a lot of dragging into work that does not involve dragging |
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Definition
| a simple machine made of a wheel firmly attached to a rod |
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Definition
| attached to the ceiling - it changes the direction of a force |
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Definition
| __ is free to move; it reduces the force needed to lift the load |
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