Question

Какова сила давления керосина, заполняющего пистерну, на кран, находящийся на глубине 2 м? Площадь крапа 1 см2. Атмосферное давление не учитывать.​

Answer 1

Формула гидростатического давления р=ро*g*h, где ро плотность жидкости, g ускорение свободного падения, h высота столба жидкости. как известно, давление на одинаковой высоте распространяется во все стороны одинаково.

р=800*10*2=16000Па=16кПа

Answer 2

Calculating Pressure Exerted by the Kerosene

To calculate the pressure exerted by the kerosene at a depth of 2m, we can use the formula for pressure:

Pressure = Density × Acceleration due to gravity × Depth

Given that the area of the tap is 1cm², we can calculate the force exerted on the tap using the formula:

Force = Pressure × Area

Let's calculate the pressure first.

Calculating Pressure:

The density of kerosene is approximately 820 kg/m³ The acceleration due to gravity is approximately 9.81 m/s².

Using the formula: Pressure = Density × Acceleration due to gravity × Depth Pressure = 820 kg/m³ × 9.81 m/s² × 2m

Result:

The pressure exerted by the kerosene at a depth of 2m is approximately 16,092.4 pascals.

Calculating Force:

Now, let's calculate the force exerted on the tap using the calculated pressure and the given area of the tap.

Using the formula: Force = Pressure × Area Force = 16,092.4 pascals × 0.0001 m²

Result:

The force exerted by the kerosene on the tap is approximately 1.60924 newtons.