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15.2 Pressure in fluids

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Question 49
H

A balloon has a volume of 5.0 m3. The surrounding air has density 1.2 kg/m3. The combined weight of the balloon, its gas and its load is 52 N. Take g=10 N/kgg=10\ \mathrm{N/kg}g=10 N/kg. What is the initial resultant force when the balloon is released from rest?

[1]
A

8.0 N8.0\ \mathrm{N}8.0 N downwards

B

8.0 N8.0\ \mathrm{N}8.0 N upwards

C

46 N46\ \mathrm{N}46 N upwards

D

46 N46\ \mathrm{N}46 N downwards

Markscheme

15.2 Pressure in fluids Questions

  1. GCSE
  2. /Physics
  3. /15.2 Pressure in fluids

132 exam-style questions on Edexcel GCSE Physics 15.2 Pressure in fluids, covering 15.2.1 Atmospheric pressure and height, 15.2.2 Pressure in fluids, 15.2.3 Pressure, force and area, 15.2.4 Pressure and depth, 15.2.5 Pressure in liquids: depth and density, 15.2.6 Upthrust, and 15.2.7 Floating and sinking. Each one has a worked solution and a mark scheme showing where the marks go.

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