KHAEMENES ACADEMY · PHYSICS 12 · WEEK 23 · DAY 05

Oscillation Synthesis

What causes repeated motion around equilibrium?

Explicit physics instruction

Oscillation synthesis links restoring behavior, graphs, period/frequency, and energy transfer.

Choose whether the question is asking about timing, phase, force, or energy before selecting a model.

Greater amplitude does not automatically mean greater frequency in the ideal small-amplitude SHM model.

Core relation: f=1/T; for ideal SHM, restoring force ∝ −displacement.

Worked example

An oscillator completes one cycle every 0.50 s, so f=1/0.50=2.0 Hz. Ten cycles would take about 5.0 s if the period remains constant.

Guided question

Create a representation map linking restoring force, graph phase, period, and energy.

Independent work

  1. Solve three period/frequency or graph questions.
  2. Annotate one oscillation graph.
  3. State one ideal-model limitation.

Spiral retrieval bridge

  1. From Week 22: distinguish translational and rotational energy.
  2. From Week 12: relate power to energy transfer over time.
  3. From Week 03: interpret slope on a velocity-time graph.

Misconception check

Greater amplitude does not automatically mean greater frequency in the ideal small-amplitude SHM model.

Formative check

If T doubles, what happens to f?

Reveal response

Frequency halves because f=1/T.

Mentor evidence conference

Ask Archaemenes to audit cycle counting, graph phase, and ideal-model assumptions.

Teacher guidance

Foundation: Calculate T and f.

Core: Interpret SHM graphs and energy shifts.

Extended: Quantify damping or uncertainty from repeated trials.