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larisa [96]
3 years ago
5

7.A builder carrying 6 bricks climbs a ladder. The weight of each brick is 25 N and the builder climbs a vertical distance of 4

meters in 8 seconds. Calculate the power used to raise all the bricks.
Physics
1 answer:
taurus [48]3 years ago
6 0

Answer:

The power used to raise all the bricks is 75 watts.

Explanation:

Given;

number of blocks = 6

weight of each block = 25 N

vertical distance climbed by the builder, d = 4m

time to climb the the vertical distance, t = 8 seconds

Weight of the 6 blocks, F = 6 x 25 N = 150 N

speed of the build, v = 4 / 8 = 0.5 m/s

The power used to raise all the bricks is calculated as;

P = Fv

P = (150)(0.5)

P = 75 watts.

Therefore, the power used to raise all the bricks is 75 watts.

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El diagrama de cuerpo libre se puede ver en la imagen adjunta, con la solución de este problema.

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Con este angulo (t) ya determinado, fijamos la atención en el triangulo BCD, este triangulo no es rectángulo, pero por medio de la ley de senos podemos determinar el angulo omega.

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Seguidamente realizamos una sumatoria de momentos alrededor del punto C, utilizado las respectivas fuerzas con los ángulos descompuestos.

El momento en el punto C es de 1920 [Lb*in].

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(See the attached image).

Hope it helps!

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