Rocking horse rockers and jacquard loom: what they have in common

1. Step 1. Rocking horse rockers — is part of — Rocking horse. Curved supports for rocking.
2. Step 2. Rocking horse — uses — Pendulum. Rocking.
3. Step 3. Pendulum — uses — Universal gravitation. The restoring force is gravity.
4. Step 4. Universal gravitation — is used in — Warp-weighted loom. The warp threads are tensioned by weights.
5. Step 5. Warp-weighted loom — is a kind of — Loom. An ancient loom.
6. Step 6. Loom — includes — Jacquard loom. A loom with punched cards.

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