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5.5 Pressure and pressure differences in fluids

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Question 4
F

A student presses a rubber suction cup against a smooth vertical glass window. The suction cup is held tightly against the glass.

Figure: A rubber suction cup pressed against a vertical glass window

image

a.

Explain why the suction cup is held tightly against the glass.

[2]
b.

The flat face of the suction cup has an area of 2.8 × 10-3 m2. Atmospheric pressure is 1.0 × 105 Pa. Calculate the size of the force the atmosphere exerts on the outer face of the cup.

[3]
Markscheme

5.5 Pressure and pressure differences in fluids Questions

  1. GCSE
  2. /Physics
  3. /5.5 Pressure and pressure differences in fluids

41 exam-style questions on AQA GCSE Physics 5.5 Pressure and pressure differences in fluids, covering 5.5.1 Pressure in a fluid and 5.5.2 Atmospheric pressure. Each one has a worked solution and a mark scheme showing where the marks go.

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