Work Power & Simple Machines
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Work | Only to be done when a force mves an object
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| Work formula | Force x distance
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| Work unit | Newton/meter or a joule
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| Joule | In the metric system n/m is called a joule
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| Power | How fast something is happening
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| Power Unit | A watt
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| Power formula | Force x distance
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| Pulley | A wheel that rotates around a stationary axle
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| Inclined Plane | A slanted surface with no moving parts, example a ramp
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| Wedge | An inclined plane that does move
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| Lever | A rigid bar that is fixed at a fulcrum
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| Wheel and Axle | A disk that turns around an axis and transfers force to and from and axle
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| Compound Machines | A combination of two or more simple machines example blender, washing machine, VCR
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| Work Input | Work that comes from the force that is applied to the machine
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| Screw | An inclined plane
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| Work Output | Work done by a machine
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| Efficiency | The comparison between work input and work output
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| Mechanical Advantage | The advantage created by a machine that enables people to work while using less force
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| Machine | An instrument used to make work easier
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
ems535
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