Newton’s laws and windlass: what they have in common

1. Step 1. Newton’s laws — is used in — Battering ram. The momentum of a heavy log.
2. Step 2. Battering ram — works like — Pile driver. A battering ram and a pile driver both strike with a heavy weight: one breaks gates, the other drives piles.
3. Step 3. Pile driver — has part — Block and tackle. Lifting the weight.
4. Step 4. Block and tackle — is part of — Crane (ancient). The crane lifted loads with a block and tackle.
5. Step 5. Crane (ancient) — has part — Windlass. The rope was wound on a windlass.

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