Racing car and elevator: what they have in common

1. Step 1. Racing car — has part — Monocoque. A monocoque.
2. Step 2. Monocoque — uses — Newton’s laws. The shell itself carries the load.
3. Step 3. Newton’s laws — is used in — Truss. A triangle is a rigid shape.
4. Step 4. Truss — is part of — Eiffel Tower. Lattice trusses.
5. Step 5. Eiffel Tower — has part — Elevator. Lifts.

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