a) Energy transfers

a) interchange between kinetic and potential energy during simple harmonic motion

bi) energy-displacement graphs for a simple harmonic oscillator

for an system in simple harmonic motion

• at the amplitude

  • maximum potential energy

  • no kinetic energy

• towards the equilibrium position

  • decreasing potential energy

  • increasing kinetic energy

• at the equilibrium position

  • no potential energy

  • maximum kinetic energy

• towards the amplitude

  • increasing potential energy

  • decreasing kinetic energy

for a spring

• oscillating vertically

  • potential energy = gravitational

• oscillating horizontally

  • potential energy = elastic