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How Inclined Planes, Wedges & Screws Work

The ramp geometry behind a slope, a wedge, and a screw thread — why a shallow ramp needs less force, and why a fine-threaded screw can generate enormous clamping force.

Inclined Plane

Inclined Plane

Screw

Screw

Screw Thread

Screw Thread

Axe

Axe

Splitting Maul

Splitting Maul

Chisel

Chisel

Corkscrew

Corkscrew

Vise

Vise