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14 Cards in this Set
- Front
- Back
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Mechanical System
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a machine composed of more than one simple machine
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joule
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a unit of measure or work, equal to the amount of work done when a force of one newton is exerted over a distance of one meter
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power
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the rate at which work is done
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work
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the result of useing force to move an object over a distance
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chemical energy
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a form of potential energy that is stored in fuels, food , and other chemicals and that is released by chemical reactions
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kinetic energy
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the enrgy of motion
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potential energy
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stored energy, such as the energy in stretched or comporessed spring or in an object raised above the surface of the earth.
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energy converter
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a hysical system in which energy is changed from one form into another
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mechanical energy
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the kinetc energy of moving objects
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simple machine
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changes in size, and direction of a force
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inclined plane
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simple maxhine consisting of a plane set at an angle to a horizontal surfaxce, forming a ramp
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screw
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a simple macxhine forms of inclined plane
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lever
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simple machine consisting of a bar that pivots about a fixed point, used to increase force or motion
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ideal machine
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an imaginary machine in which there is no friction
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