AQA · Mathematics · 8300
GCSE Maths: Pressure
Ratio & Proportion · AQA GCSE Maths (8300). Cards are generated from the Corbettmaths textbook exercise and practice questions for Pressure (Corbettmaths Video 385), and every card links back to the exact page it came from. Practice tests generate fresh variations of these questions, so the numbers change every attempt. Source material © Corbettmaths — used with attribution.
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What is the formula for pressure in terms of force and area?
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Pressure = Force ÷ Area (P = F/A).
How do you calculate force from pressure and area?
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Force = Pressure × Area (F = P × A).
How do you calculate area of contact from force and pressure?
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Area = Force ÷ Pressure (A = F/P).
A force of 3000 N on an area of 4 m² gives a pressure of ? N/m².
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750
What pressure does a 250 N force exert on 20 cm²?
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12.5 N/cm² (250 ÷ 20).
What force gives a pressure of 10 N/cm² over 16 cm²?
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160 N (10 × 16).
How many cm² are in 1 m²?
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10 000 cm² (100 cm × 100 cm).
How do you convert a pressure from N/cm² to N/m²?
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Multiply by 10 000, because 1 m² = 10 000 cm².
What pressure does 180 N exert on 50 cm², in N/m²?
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36 000 N/m² (180 ÷ 50 = 3.6 N/cm², × 10 000).
What is the contact area of a cylinder of radius r standing on a table?
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The area of its circular base, πr².
Of two objects with equal weight, which exerts more pressure on the floor?
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The one with the smaller contact area, since pressure = force ÷ area.
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