Chapter 14 Vocabulary Flashcards
Work
The product of distance and the force in the direction an object moves.
Power
The rate of doing work.
Horsepower
A common unit of power equal to about 746 watts.
Joule
The SI unit of work equal to 1 newton-meter.
Watt
The SI unit of power equal to one joule per second.
Machine
A device that changes a force.
Input distance
The distance through which the input force acts in a machine.
Output force
The force exerted by a machine.
Work output
The work done by a machine as the output force acts through the output distance.
Input force
The force exerted on a machine
Work input
The work done on a machine as the input force acts through the input distance.
Output distance
The distance an output force acts through in a machine.
Mechanical advantage
The number of times that a machine increases an input force.
Actual mechanical advantage
The ratio of the output force to the input force in a machine.
Ideal mechanical advantage
The mechanical advantage of a machine in the absence of friction.
