Seat belt and rolling mill: what they have in common

1. Step 1. Seat belt — uses — Newton’s laws. It restrains the body during sudden braking.
2. Step 2. Newton’s laws — is used in — Truss. A triangle is a rigid shape.
3. Step 3. Truss — has part — Beam. Members.
4. Step 4. Beam — is part of — Overhead crane. An overhead crane runs along a beam bridge under the workshop roof.
5. Step 5. Overhead crane — is part of — Steel works. Overhead cranes.
6. Step 6. Steel works — has part — Rolling mill. Rolling mills.

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