Un bloque de masa (5 Kg), se desplaza por un plano inclinado con un ángulo de 20°, sabiendo que el coeficiente de fricción entre elplano y el bloque es de 0,3. Determine A)Fuerza normal (N), B)Fuerza de fricción (fr), C)Componente en x del peso (Px), D) Componente del peso en y (Py) y E)la aceleración del sitema (a).
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Ответ:
Potential energy is![U=mgh](/tpl/images/0350/3895/06018.png)
Explanation:
The potential energy depends on the mass, the acceleration of gravity g and the height at which the object or person is.
Potential energy![U=mgh](/tpl/images/0350/3895/06018.png)
In this case we would need to know the exact mass of the hiker in order to calculate the potential energy.
But we know the values of g and h
So, the potential energy
m is the mass of the hiker, wich is not in the description of the problem.