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wlad13 [49]
3 years ago
12

Una grúa efectúa un trabajo de 45000 joules en 0.1

Physics
1 answer:
Hunter-Best [27]3 years ago
3 0

Answer:

<em>P = 7.5 KW</em>

<em>P = 7500 W</em>

Explanation:

<u>Potencia Mecánica</u>

Es una medida del trabajo realizado por un agente por unidad de tiempo.

Siendo W el trabajo mecánico y t el tiempo necesario para realizarlo, entonces la potencia viene dada por:

\displaystyle P=\frac{W}{t}

La unidad SI de la potencia es el vatio (W). Otra unidad muy común es el kilovatio (KW). 1 KW = 1000 W.

La grúa realiza un trabajo W=45000 Joules en un tiempo de t=0.1 minutos.

Para calcular la potencia en vatios, es necesario llevar el tiempo a segundos:

t = 0.1 min *60 = 6 segundos.

La potencia se calculará ahora:

\displaystyle P=\frac{45000}{6}

P = 7500 W

En kilovatios:

P = 7500 / 1000 = 7.5 KW

P = 7.5 KW

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3 years ago
The engine of a 2000 kg Mercedes going up Pike’s Peak delivers energy to its drive wheel at the rate 100 kW . Neglecting air res
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v = 10 m/s

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Mass of Mercedes engine = 2000 Kg

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