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Definition
| A device that makes work easier |
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Term
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Definition
| Machines make work easier by changing the _______ or ______ of the force you exert |
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Definition
| Machines try to overcome the forces of ___ and ___ that resists movement of objects |
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Definition
| Force that is applied to a machine |
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Definition
| Force that a machine applies to an object |
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Definition
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Definition
| Work exerted by a machine |
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Definition
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Definition
| Theoretical machine in which work output is equal to work input due to no friction |
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Definition
| The number of times a machine multiplies the effort force applied to it |
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Term
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Definition
| Mechanical advantage formula for any machine |
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Term
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Definition
| Machines that multiply the force applied to them have a mechanical advantage that is ____. |
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Term
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Definition
| Machines that only change the direction of the effort force have a mechanical advantage that is ___. |
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Definition
| Machines that only change the direction of an applied force or the speed at which it moves have a mechanical advantage that is ___. |
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Definition
| Machines that make work easier with just one movement |
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Term
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Definition
| A bar that is free to pivot around a fixed point |
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Definition
| The point around which a lever rotates |
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Term
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Definition
| Formula for IMA of a lever |
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Term
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Definition
| Lever where fulcrum is positioned between the effort and resistance forces |
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Term
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Definition
| Lever where resistance force is positioned between the fulcrum and effort force |
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Term
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Definition
| Lever where effort force is positioned between the resistance force and fulcrum |
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Term
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Definition
| Modified lever where a chain or rope runs through a grooved wheel |
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Term
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Definition
| IMA of a single fixed pulley is ___. |
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Term
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Definition
| IMA of a single movable pulley is ___. |
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Term
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Definition
| A system of multiple pulleys |
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Term
| number of ropes supporting the resistance force |
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Definition
| To calculate the IMA of a multiple pulley system, simple count the ____. |
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Term
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Definition
A modified lever in which two wheels of different sizes rotate together.
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Term
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Definition
| The effort force is applied to the ____ of a wheel and axle |
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Definition
| The ___ of a wheel and axle applies the resistance force and is smaller in diameter. |
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Term
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Definition
| Formula for calculating the IMA of a wheel and axle |
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Term
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Definition
| A wheel and axle with teeth |
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Term
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Definition
| Type of simple machine with a sloping surface used to raise objects |
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Term
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Definition
| IMA formula for an inclined plane |
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Term
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Definition
| An inclined plane that is wound in a spiral around a cylindrical post |
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Term
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Definition
| An inclined plane with one or more sloping sides that moves through a material to separate it |
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Term
Levers, pulleys, wheel and axles
Inclined plane, screw, wedge |
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Definition
| Classify the six simple machines into two groups of related machines |
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Term
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Definition
| A machine that is a combination of two or more simple machines |
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Term
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Definition
| Measures how much of the work put into a machine is changed to useful work put out of the machine |
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Term
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Definition
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Term
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Definition
| Rate at which work is done |
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Term
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Definition
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Term
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Definition
| Power is measured in _____. |
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Term
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Definition
1 watt is equal to _____.
1000 watts is a _____. |
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Term
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Definition
| Friction changes the useful work of a machine into ___ energy. |
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Term
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Definition
| When a machine is used to perform a task, the work output is always ____ than the work input. |
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