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p = 0.92 gr/cm³ = 920 Kg/m³
g = 9.8 m/s²
h = 30 cm = 0.3 m
Presion = (920 Kg/m³).(9.8 m/s²).(0.3 m) = 2704.8 N/m²
Presion = Fuerza/Area
Area = πxr²; Donde r = 10 cm = 0.1 m
Area = π.(0.1 m)² = 0.0314159 m²
Fuerza = Presion x Area = (2704.8 N/m²).(0.031415926 m²)
Fuerza = 84.9738 N
Peso = 84.9738 N; Presion = 2704.8 N/m²:
Otra Forma
V = π.r².h = π.(0.1 m)².(0.3 m) = 0.0094247779 m³
Densidad = (0.92 gr/cm³) = (920 Kg/m³)
Densidad = m/V; masa = Densidad x Volumen
masa = (920 Kg/m³).(0.0094247779 m³) = 8.67079572 Kg
Peso = (8.67079572 Kg).(9.8 m/s²) = 84.9737981 N
Fuerza = 84.9737981 N
Presion = Fuerza/Area.
Area = π.r² = π.(0.1 m)² = 0.03141592 m²
Presion = (84.9737981 N)/(0.03141592 m²)
Presion = 2704.8 N/m²