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O motivo crucial pelo qual os cabos de alta tensão NUNCA ficam totalmente esticados! ⚡📐 À primeira vista parece descuido, mas essa folga em formato de curva é o que salva a rede elétrica. Se estivessem retos e tensionados, variações de temperatura, peso e ventos fortes criariam um estresse mecânico tão absurdo que arrebentaria os cabos ou derrubaria as torres de 50 metros! A curvatura livre distribui a força e impede que cidades inteiras fiquem no escuro. Você já tinha reparado nes...
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