Pulleys

Drag pulleys from the tray onto the beam or the hook, or start from a ready-made rig. Then drag the rope end (or hold Pull) to lift.

1×mechanical advantage
rope segments holding the load
Load40 kg
Force you must pull with40 kg
Your strength50 kg
0strength2× strength
Lifts!
Rope pulled0.0 m
Height gained0.0 m

Ready-made rigs

Load on the hook

Idealised: no friction, weightless rope and blocks, ropes treated as vertical. Real pulleys lose a few percent per sheave. The load swings on its sling; wind pushes on its face, and past about 50° it slips off the hook. Click the rope to cut it, or click the load to knock it off. Keys: ↑ pull, ↓ lower.