PET e mechanical clock: o que têm em comum

1. Passo 1. PET — inclui — Polyester. Polyester fibre is PET.
2. Passo 2. Polyester — é material para — Seat belt. The webbing is polyester.
3. Passo 3. Seat belt — utiliza — Newton’s laws. It restrains the body during sudden braking.
4. Passo 4. Newton’s laws — é utilizado em — Pendulum. The swing is described by Newtonian mechanics.
5. Passo 5. Pendulum — faz parte de — Pendulum clock. The pendulum sets the period.
6. Passo 6. Pendulum clock — evoluiu de — Mechanical clock. Huygens added a pendulum to the mechanical clock.

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