Work and 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 | is done when a force exerted on an object causes that object to move some distance; equal to force times distance; measured in joules.
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| Power | rate at which work is done; equal to the work done divided by the time it takes to do the work; measured in watts.
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| Input Force | force exerted on a machine
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| Output Force | force exerted by a machine
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| Mechanical advantage | number of times the input force is multiplied by a machine; equal to the output force divided by the input force
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| efficiency | equals the output work divided by the input work; expressed as a percentage
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| simple machine | a machine that does work with only one movement; includes the inclined plane, wedge, screw, lever, wheel and axle, and pulley.
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| compound machine | machine made up of a combination of two or more simple machines
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| inclined plane | simple machine that is a flat surface, sloped surface, or ramp
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| wedge | simple machine consisting of an inclined plane that moves; can have one or two sloping sides
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| screw | simple machine that is an inclined plane wrapped around a cylinder or post
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| lever | simple machine consisting of a rigid rod or plank that pivots or rotates around a fixed point called the fulcrum
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| wheel and axle | simple machine made from two circular objects of different sizes that are attached and rotate together
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| pulley | simple machine made from a grooved wheel with a rope or cable wrapped around the groove
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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:
vahajuddin
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