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Work, Power, and Simple Machines Formulas
Formula
What it means
Units used
Work
W = F x d
Work equals force times distance
Joule (J)
or
Newton-meter (N-m)
Power
P = Wt
Power equals work divided by time
Watt (W)
or
Joule per second (J/s)
Actual
Mechanical Advantage
A= FFoi MA
*Friction is taken into account
Actual mechanical advantage equals force output divided by force input
No unit
Only a numerical value
Ideal
Mechanical Advantage
Iddio MA =
*Friction is not taken into account
Ideal mechanical advantage equals distance input divided by distance output
No unit
Only a numerical value
Mechanical Efficiency
ME = WW x 100oi
Mechanical efficiency equals work output divided by work input times 100
%
Formula
What it means
Units used
Work
W = F x d
Work equals force times distance
Joule (J)
or
Newton-meter (N-m)
Power
P = Wt
Power equals work divided by time
Watt (W)
or
Joule per second (J/s)
Actual
Mechanical Advantage
A= FFoi MA
*Friction is taken into account
Actual mechanical advantage equals force output divided by force input
No unit
Only a numerical value
Ideal
Mechanical Advantage
Iddio MA =
*Friction is not taken into account
Ideal mechanical advantage equals distance input divided by distance output
No unit
Only a numerical value
Mechanical Efficiency
ME = WW x 100oi
Mechanical efficiency equals work output divided by work input times 100
%
1
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