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22 Cards in this Set
- Front
- Back
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Give an example of something with a mechanical advantage of 1 |
pulley system, blinds, flagpole |
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Give an example of something with a mechanical advantage of greater than one |
car jack, bulldozer, crane, |
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Give an example of something with a mechanical advantage of less than 1 |
hockey stick, rake, broom, fishing rod |
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aesthetics means |
when something is designed to look good |
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MA is |
2 |
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A mechanical system is |
a group of physical parts that interact to do a task |
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IMA is greater than MA because |
IMA does not have friction and MA does |
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automation |
when humans are replaced by robots or computers to perform a task |
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mechanical advantage |
the ratio of output force to input force Fout/Fin |
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ideal mechanical advantage |
the mechanical advantage when friction is not present din/dout |
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efficiency |
how well a machine converts work in to work out |
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ergonomics |
designing for comfort - designing for the human body |
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the formula for efficiency is |
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mass production |
when human were put into an assembly line where they would do one repeated job. It increased speed of production but decreased quality of the product |
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consumerism |
practice and belief that happiness and satisfaction comes from purchasing goods and services |
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MA = 1means |
same work in and out - usually indicates a change in direction |
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MA <1means |
changes speed and direction |
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MA >1 means |
less work is put in that out - makes it easier to do a job |
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What is the formula for mechanical advantage |
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What is the formula for ideal mechanical advantage |
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The metric units for IMA or MA are |
TRICK QUESTION - there are NO units ! |
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The unit for efficiency is: |
% |
