🎣 Pulley Systems & Mechanical Advantage

Pulley Systems Simulator: Mechanical Advantage & Block-and-Tackle

This pulley simulator shows how a block-and-tackle multiplies force. Each rope segment supporting the movable block carries a share of the load, so with n supporting segments the mechanical advantage is n and the effort needed is only weight/n. Add segments and watch the effort force fall until a modest pull lifts a heavy load — the principle behind cranes, sailing rigs, and gym cable machines. But there's no free energy: to raise the load a small height you must pull n times as much rope, so effort times rope pulled equals weight times height. Live labels show the effort, the mechanical advantage, and the rope-to-lift ratio, and a card tells you whether your chosen strength can raise the load. Predict lift-vs-no-lift, then pull to hoist it. It's the simple-machine cousin of the lever and hydraulic press.

What you can do in this simulation

• Add or remove supporting rope segments and watch the effort force drop to weight / n
• Lift a load with a small pull once the effort falls below your chosen strength
• See the force-for-distance tradeoff: you pull n times as much rope as the load rises
• A card reports mechanical advantage, effort force, rope ratio, and lift-vs-no-lift
• Predict mode: call whether a configuration lifts the load; fixed-pulley, block-and-tackle, and heavy-load presets

Concepts covered

pulley · mechanical advantage · block and tackle · simple machines · work conservation · effort and load · force multiplication

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