En un concurso de tira y afloja, Alex, Betty y Charles tiran horizontalmente de una llanta de automóvil
tal como se muestra en la figura. La llanta permanece en reposo a pesar de la fuerza que ejercen las
tres personas. Alex tira con una fuerza Fa de magnitud 220N, y Charles tira con una fuerza Fc de
magnitud 170N. ¿Cuál es la magnitud de la fuerza que ejerce Betty Fb?
Answers: 1
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En un concurso de tira y afloja, Alex, Betty y Charles tiran horizontalmente de una llanta de automó...
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