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An engineering firm is evaluating two different regenerative braking energy recovery systems for a new hybrid locomotive:

  • System X (Flywheel Kinetic Storage):

    • Energy stored per 50 kg of flywheel assembly = 12,500 kJ12,500\text{ kJ}12,500 kJ
    • Percentage of stored energy lost to friction and heat = 18%

  • System Y (Supercapacitor Electrostatic Storage):

    • Energy stored per 50 kg of capacitor module = 4,500 kJ4,500\text{ kJ}4,500 kJ
    • Percentage of stored energy lost to thermal dissipation = 8%

Calculate the difference in the useful energy retrieved (in kJ\text{kJ}kJ) from 50 kg of storage medium between System X and System Y.

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Conservation and dissipation of energy Questions

Practise AQA GCSE Physics Conservation and dissipation of energy with exam-style questions for Foundation and Higher tier. 29 questions covering Energy transfers in a system and Efficiency, matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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Conservation and dissipation of energy Questions

  1. GCSE
  2. /Physics
  3. /Conservation and dissipation of energy