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16 Cards in this Set

  • Front
  • Back
work
force acting over a distance to move and object
joule
unit of work and energy
power
rate at which work is done
watt
unit of power
machine
device that makes work easier by changing force and distance or by changing the direction of force
work input
work that goes into a machine
work output
work that comes out of a machine
efficiency
comparison of work input to work output
mechanical advantage
number of times a machine multiplies the effort force
inclined plane
straight slanted surface that multiplies force
wedge
inclined plane that moves
screw
inclined plane wrapped around a central bar to form a spiral
lever
rigid bar free to move about a single point
fulcrum
fixed pivot point of a lever
pulley
rope, belt, or chain, wrapped around a wheel
wheel and axle
machine made up of two circular objects of different sizes