4.13 understand how conservation of energy produces a link between gravitational potential energy, kinetic energy and work


  1. At the highest point of the swing, it has the highest GPE as it is far from earth, and has the lowest KE, as it slows to the stop point
  2. Bottom of the swing, lowest GPE as it is closest to earth, highest KE as it goes quickly past the bottom point
  3. Between the points: Pendulum upwards : work is being transferred from KE to GPE
  4. Pendulum downwards : Work is being transferred from GPE to KE
  • The pendulum demonstrates that energy is conserved, changing between different forms.
  • Energy can be lost from the pendulum because it slows down/energy is transferred into heat or sound

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