Two yo-yo halves and shaduf: what they have in common

1. Step 1. Two yo-yo halves — is part of — Yo-yo. Flywheel discs.
2. Step 2. Yo-yo — has part — Rope. A thread.
3. Step 3. Rope — is used in — Well. Water was raised with a bucket on a rope.
4. Step 4. Well — uses — Shaduf. Or with a well sweep.

Open Evothings