ipc ch.14
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Last updated 2:19 AM on 3/3/25
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21 Terms
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work
the product of force and distance
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work requires ...
motion
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work depends on ...
direction
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work formula
w=Fd
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Si unit for work
joule (J)
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power
the rate at which work is done
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Si unit for power
watt (w)
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power formula
P=w/t
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1 horsepower=
about 746 watts
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machine
a device that changes a force, help do work
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input
what the person does
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output
weight, what your trying to accomplish
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mechanical advantage
the number of times the machine increases an input force
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due to friction
actual mech. adv. is less than ideal mech. adv.
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force is given
actual mechanical advantage, MA
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distance is given
ideal mechanical advantage, IMA
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actual mechanical advantage formula
MA= Fout/Fin
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ideal mechanical advantage
the mechanical advantage in the absence of friction
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ideal mechanical advantage formula
IMA= Din/Dout
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efficiency
the percentage of work input that becomes work output
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efficiency formula
E= Wout/Win = %/100
Note 
Flashcards (20)