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