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Lina20 [59]
4 years ago
11

ocho libros cada uno de 4.0cm de espesor y masa de 1.8 kg, se encuentra en posición horizontal sobre una mesa ¿ cuanto trabajo s

e requiere para apilarlos uno sobre otro?
Physics
1 answer:
elena-14-01-66 [18.8K]4 years ago
5 0

Answer:

El trabajo requerido es 1.978 julios

Explanation:

La cantidad de trabajo para apilar cada libro = Masa del libro, m × Aceleración debido a la gravedad, g × Altura del libro, h

La altura de cada libro = 4.0 cm. = 0.004 m

El primer libro es la primera capa, otros libros se colocan encima

Altura del primer libro levantado = 0

El trabajo realizado en el primer libro = 1.8 × 9.81 × 0 = 0

Trabajo realizado para el segundo libro = 1.8 * 9.81 * 0.004 = 0.071 J

Trabajo realizado para el tercer libro = 1.8 * 9.81 * 0.004 * 2 = 0.141 J

Trabajo realizado para el cuarto libro = 1.8 * 9.81 * 0.004 * 3 = 0.212 J

Trabajo realizado para el quinto libro = 1.8 * 9.81 * 0.004 * 4 = 0.283 J

Trabajo realizado para el sexto libro = 1.8 * 9.81 * 0.004 * 5 = 0.353 J

Trabajo realizado para el séptimo libro = 1.8 * 9.81 * 0.004 * 6 = 0.424 J

Trabajo realizado para el octavo libro = 1.8 * 9.81 * 0.004 * 7 = 0.494 J

El trabajo total realizado = 0.071 + 0.141 + 0.212 + 0.283 +0.353 + 0.424 + 0.494 = 1.978 J.

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