Balance beam and diesel 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 — Tower crane. A counterweight balances the jib.
4. Step 4. Tower crane — has part — Block and tackle. The load is lifted with a block and tackle.
5. Step 5. Block and tackle — is part of — Drilling rig. The block and tackle lifts the drill string.
6. Step 6. Drilling rig — has part — Diesel engine. The drive.

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