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Physics, 25.11.2021 23:40 heatherswiffin666

1. Un atleta levanta una pesa de 120 kg en 4 s, luego la levanta en 2 s y en el último intento lo hace en 1 s. Si en todos los casos la pesa alcanza la misma altura, la fuerza aplicada, ¿realiza el mismo trabajo en los tres
casos? ¿Aplica la misma potencia? Argumenta.

2. Una mano ejerce una fuerza horizontal constante sobre un
bloque que se desliza libremente sobre una superficie sin fricción
(figura 6-30). El bloque parte del reposo en el punto A y, cuando
ha recorrido una distancia d hasta el punto B, viaja con rapidez vB.
Cuando el bloque ha recorrido otra distancia d hasta el punto C,
¿su rapidez será mayor que, menor que o igual a 2 vB? Explique su
razonamiento.

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Answers: 3

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1. Un atleta levanta una pesa de 120 kg en 4 s, luego la levanta en 2 s y en el último intento lo ha...
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