El principio de arquímedes – Artofit

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El principio de Arquímedes

¿Qué es el principio de Arquímedes? El principio de Arquímedes es un principio físico que establece que un cuerpo sumergido en un fluido recibe una fuerza de empuje de la misma magnitud y dirección de la fuerza que el fluido ejerce sobre la parte sumergida del cuerpo. En general, la fuerza de empuje que ejerce
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Principio de Arquímedes

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Principio de Arquímedes. Explicación

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Archimedes principle stock vector. Illustration of mechanics - 37211092

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Principio de Arquímedes

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Principio de Pascal

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POTENCIA DE MOTORES | By Profe Casas | Let's see an engine power problem. I'm asked to determine the power in HP of an engine that lifts thirty-eight kilograms blocks. Up to a height of eight meters in two seconds, but at a constant speed. Well here we have an engine then. It lifts weights of thirty eight kilograms, up to a distance says eight meters, then the engine has lifted this block, a height of eight meters, here then we point out the eight meters that the block has been lifted, and further says that it has done it in a while of two seconds. And at steady speed he tells me. So let's do the free body chart. For the block first we have its weight i.e. its force of gravity. In addition, the engine transmits the block a motor force, in this case it is vertical upward, with which it finally rises the block. But since the movement is at constant velocity that motor force must be equal to the gravity force of the block so we say motor force is equal to the gravitational force of the block the gravity force would be the mass of the block by gravity. Then this force that prints the engine must be equal to the mass worth thirty-eight kilograms multiplied by the gravity which is about nine to eight. This is about to give us three hundred seventy two comma four newtons. Now, we know that the power of an engine is equal to the work it does per unit of time. But in turn the work for this vertical force is equal to the motor force multiplied by the distance that raises the block between the unit of time so we replace the data and so we would have motor force three hundred seventy two comma four. The distance eight meters and between the time worth two seconds. This roughly gives us a value of one thousand four hundred and eighty-nine comma six. But as the answer is in HP we have to do the conversion and here is the equation then we apply conversion factor and say a HP equals to seven hundred forty six watts multiplying finally we would have that the power developed by the motor is equal to one comma nine nine HP. This equals to about two HP. And that's the answer. The key, the C. Leave me a comment on how you would solve the problem. See you.

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