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Simple Machines


lever a bar that's free to piviot on a fixed point (fulcrum)
pulley a grooved wheel w/ rope or cable running along the groove
inclined plane a ramp
wedge inclined plane w/ 1+ sloping sides
screw inclined plane wrapped in a spiral around a cylindrical post
wheel + axel axle attached to center of a larger wheel so both rotate together
lever MA increase input force + changes direction of the force (all 3 way to make work easier)
pulley MA change direction
inclined plane MA increase distance; reduces amount of force required
wedge MA increases force
screw MA increase distance
wheel + axle MA increases force
Simple Machine a machine that does work w/ 1 movement of the machine
Compound Machine made of 2+ simple machines
lever 1st class fulcrum in middle
lever 2nd class output in middle
lever 3rd class input in middle
lever 1st class MA always change direction
lever 2nd class MA always increase force - no change of direction
lever 3rd class MA increase distance - don't typically change direction
Machine device that makes work easier
Created by: skatepenguin