Kerosene flows in a pipe to which is connected a differential manometer as shown in the figure. Water is used as the indicating fluid and the water level below the centreline of the pipe is 570 mm at position 1 and 350 mm at position 2. Determine the pressure difference between position 1 and 2. Assume the relative density of kerosene is 0.78.	

To determine the pressure difference between positions 1 and 2 in a pipe using a differential manometer filled with water, we need to apply the principles of fluid mechanics, specifically using the hydrostatic pressure difference.

### Given Data:
- Height difference at position 1: \( h_1 = 570 \, \text{mm} = 0.570 \, \text{m} \)
- Height difference at position 2: \( h_2 = 350 \, \text{mm} = 0.350 \, \text{m} \)
- Relative density of kerosene: \( \text{RD}_{\text{kerosene}} = 0.78 \

Kerosene flows in a pipe to which is connected a differential manometer as shown in the figure. Water is used as the indicating fluid and the water level below the centreline of the pipe is 570 mm at position 1 and 350 mm at position 2. Determine the pressure difference between position 1 and 2. Assume the relative density of kerosene is 0.78.

Learn how to calculate the pressure difference between two positions in a pipe using a differential manometer filled with water. This example uses kerosene with a relative density of 0.78 and covers key fluid mechanics concepts such as hydrostatics and the pressure difference formula. Suitable for high school and college-level students.

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