Simple machines {simple machine} use small force exerted over long distance or large force exerted over short distance.
lever
Rods, such as crowbars, can have balance point near one end. Short radius moves short distance and exerts large force, as long radius moves long distance and needs only small force.
inclined plane
Ramps can lift heavy objects short vertical distances, by using small forces over long horizontal distances.
screw
Inclined planes can wind around axis, to allow lifting water short vertical distances using small forces over long horizontal distances.
Physical Sciences>Physics>Dynamics>Machine
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Date Modified: 2022.0224