A-level · Work, energy & power

Work done by a forceExam-style questions

The work done by a constant force, W = Fd when the force is along the motion and W = Fd cosθ when it acts at an angle, together with work done against gravity and against resistance — and the sign convention that makes a force opposing the motion do negative work.

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19 questions · A Level level · mark scheme and worked solution on each · no sign-up to try

DifficultyAllLevel 1Level 2Level 3Level 4Level 5
  1. 1
    A pump raises 200 kg200\text{ kg} of water through a vertical height of 15 m15\text{ m} and ejects it with speed 6 m s−16\text{ m s}^{-1}. Take g=10 m s−2g = 10\text{ m s}^{-2}.

    Find the total work done by the pump. (5 marks)
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