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Friction and unwanted energy transfer

Friction and unwanted energy transfer

Friction is a force that opposes relative motion between two surfaces in contact. Microscopic bumps on the surfaces catch as they slide, so the moving object has to do work against friction.

9.3 Reducing energy transfer Lesson

  1. GCSE
  2. /Physics
  3. /9.3 Reducing energy transfer

Step-by-step lessons on Edexcel GCSE Physics 9.3 Reducing energy transfer, covering 9.3.1 Reducing unwanted energy transfer through lubrication. Each one builds up to exam-style questions. Master the required practical work and core equations early, since both papers can draw on content and maths skills from across the whole specification.

Lessons