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lys-0071 [83]
3 years ago
12

1Calcula la fuerza necesaria para subir un peso de 500 N con una palanca si el brazo de potencia mide 3 mt y el de resistencia 1

,5 mt.
2. Tenemos una palanca de 1,5 mts de largo, con el punto de apoyo a 0,5 mt de la carga. Si disponemos de una máquina que aplica una fuerza de 400 N; que peso máximo podriía levantar.
3. Una persona de 60 Kg y otra de 40 están sentadas en un balancín de un parque de forma que la primera está a 2 mt del punto de apoyo. A que distancia del punto de apoyo debe sentarse la segunda persona para que el balancín esté en equilibrio. Dibujar el esquema.
4. Se tiene una piedra de 30 Kg para levantarla con una palanca de 1,8 mt de larga. Si la palanca se apoya a 0,8 mt de la piedra, cuál debe ser la fuerza aplicada para levantar la piedra?.


hay alguien de taaaan buen corazón por 20 pnts
Physics
1 answer:
Zepler [3.9K]3 years ago
4 0

Answer:

Next we come to calculating the mechanical advantage of a lever. To do this, you divide the distance from the fulcrum, the point at which the lever pivots, to the applied force by the distance from the fulcrum to the resistance force.

Explanation:

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The body then moves at a constant uniform motion down according to Newton's first law

Explanation:

At the point the object of mass, m, is dropped from the height of the tower, the only force acting on the object is the gravitational force such that the object has an acceleration which is the acceleration due to gravity, g, and the gravitational force is therefore = m × g

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Answer: F = 1235 N

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Acceleration is the change of velocity in a period of time: a=\frac{\Delta v}{\Delta t}

Velocity of the car is in km/h. Transforming it in m/s:

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At the moment the car decelerates, acceleration is

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Answer:

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