Una piedra de amolar al reducir su velocidad angular desde 1500 rpm hasta 800 rpm lograr 700 revoluciones. calcular: a) la desaceleración de la piedra b) el tiempo que requiere para esta disminución de velocidad c) si la velocidad continua reduciendo a la misma velocidad ¿cuánto tiempo más se requiere para quedar en reposo? resp. a) -2rad / s² b) 36,65s c) 41,9s
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Ответ:
explanation: 45/5=9