Chainhoist

DCS Code: 1M20.10 Last Updated: March 27, 2026
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Purpose

Demonstrates mechanical advantage in a differential pulley (Weston hoist). Two locked sheaves of slightly different radii produce a large force multiplication, illustrating how simple machines trade distance for force.

Differential chain hoist with two large transparent sheaves on a wooden crossbar (upper block), ball chain connecting to a smaller transparent lower block with a mass attached, mounted on a bench clamp stand
Figure 1: