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AQA GCSE · Question 07.2 · Forces
When the swimming pool is full, the weight of the water is 1 960 000 N. The bottom of the swimming pool has an area of 49 m².
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Calculate the pressure at the bottom of the swimming pool when it is full.
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Use the equation:
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pressure = weight / area
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Choose the unit from the box.
When the swimming pool is full, the weight of the water is 1 960 000 N. The bottom of the swimming pool has an area of 49 m².
<br><br>
Calculate the pressure at the bottom of the swimming pool when it is full.
<br>
Use the equation:
<br>
pressure = weight / area
<br><br>
Choose the unit from the box.
How to approach this question
1. Identify the values for weight (force) and area from the question.
2. Substitute these values into the given equation for pressure.
3. Calculate the numerical answer.
4. Choose the correct unit for pressure from the box provided.
Full Answer
pressure = 1 960 000 N / 49 m²
pressure = 40 000 Pa
The question provides the equation: pressure = weight / area. (Note: weight is a force).
The values are given as:
weight (force) = 1 960 000 N
area = 49 m²
Substitute the values into the equation:
Pressure = 1 960 000 / 49
Pressure = 40 000
The unit for pressure is the Pascal (Pa), which is equivalent to N/m². From the box, the correct unit is Pa.
Common mistakes
✗ Dividing area by weight.\n✗ Choosing the wrong unit (e.g., N, which is the unit for force).\n✗ Calculation error.
Practice the full AQA GCSE Physics Foundation Tier Paper 2
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