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25 Cards in this Set

  • Front
  • Back
examples of levers
TEETER TOTTER, CROWBAR, SCREWDRIVER TO OPEN CAN
a wheel used to tranfer power by means of a rope
PULLEY
a bar used to pry or dislodge
LEVER
an inclined plane wrapped around a cylinder
SCREW
two inclined planes working together
WEDGE
examples of a wedge
AXE, SCREWDRIVER, NAIL
a block and tackle is a...
PULLEY
a flat surface that makes an angle with the horizon
INCLINED PLANE
examples of inclined planes
RAMP
a tool that multiplies the forces or changes the direction of motion
SIMPLE MACHINE
examples of wheel and axle
CAN OPENER, PENCIL SHARPENER
a wheel turned by a cord or chain attached to an axle
WHEEL AND AXLE
mechanical advantage of a wheel and axle
WHEEL RADIUS / AXLE RADIUS
mechanical advantage of a lever
EFFORT ARM / RESISTANCE ARM
amount of energy input is available as useful energy output
EFFICIENCY
amount that the machine multiplies the effort force
MECHANICAL ADVANTAGE (MA)
the force or weight applied
EFFORT FORCE
the weight being lifted
RESISTANCE FORCE
how many times easier it is to use the machine
MECHANICAL ADVANTAGE
mechanical advantage of an inclined plane
LENGTH / HEIGHT
mechanical advantage of a pulley
NUMBER OF STRANDS ATTACHED TO A LOAD
6 simple machines
WEDGE, SCREW, INCLINED PLANE, LEVER, WHEEL AND AXLE, PULLEY
equation for efficiency
work output / work input
amount of work applied to the system
WORK INPUT
amount of work done by the machine
WORK OUTPUT