Balance beam and newcomen engine: what they have in common

1. Step 1. Balance beam — is part of — Shaduf. A long pole acting as a lever.
2. Step 2. Shaduf — uses — Counterweight. The counterweight makes lifting the bucket easier.
3. Step 3. Counterweight — is used in — Forklift. A counterweight.
4. Step 4. Forklift — has part — Hydraulic cylinder. Lifting the forks.
5. Step 5. Hydraulic cylinder — has part — Piston. The piston is moved by liquid.
6. Step 6. Piston — is part of — Newcomen engine. Atmospheric pressure moves the piston.

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