Energy,work, and simple machines Flashcards
(20 cards)
A unit used to measure energy and work
Joule
Stored energy
Potential Energy
The energy of motion
Kinetic energy
The combination of kinetic and potential energy
Mechanical energy
No matter how transferred or transformed all of the energy is still present in one form or another
Law of Conservation of energy
The rate at which work is done
Power
The unit of measurement for power
Watt
The unit of measurement for power for engines and motors
Horsepower
The use of force to move an object
Work
any device that makes doing work easier
Machine
The number of times a machine multiplies the input 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 machine son which all other machines are based
Simple machine
A solid bar that rotates or turns around a fixed point
Lever
A fixed point around which a lever rotates
Fulcrum
A simple machine that is a wheel attached to an axle
Wheel and axle
A wheel with a grooved rim that turns on an axle
Pulley
A simple machine that is a sloping surface
Inclined plane
A simple machine that has a thick end and a thin end
Wedge
A simple machine that is an inclined plane wrapped around a cylinder
Screw
