Centrifuge and lathe: what they have in common

1. Step 1. Centrifuge — uses — Centrifugal effect. Separation by density.
2. Step 2. Centrifugal effect — is used in — Sling. The projectile is whirled around.
3. Step 3. Sling — has part — Rope. A strap.
4. Step 4. Rope — is part of — Lathe. The bowstring wraps around the workpiece and turns it.

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