Chapter 4 Flashcards
A unit used to measure energy and work
Joule
Stored energy
Potential energy
The energy of motion
Kinetic energy
A combination of the kinetic energy and potential energy an object has
Mechanical energy
A law stating that no matter how energy is transformed,all of the energy is still present in one form or another
Conversation of energy
The rate at which work is done
Power
The unit of measurement for power
Watt
The unit of measurement of power for engines and motors
Horsepower
The use of force to move an object over a distance
Work
Any device that makes doing work easier
Machine
The number of times a machine multiplies the input of force
Mechanical advantage
The percentage of the input work done on a machine that the machine can return in output work
Efficiency
One of the basic machines on which all other mechanical machines are based
Simple machines
A solid bar rotates or turns around a fixed point
Lever
A fixed point around which a lever rotates
Fulcrum
