IB Physics SL C.1.1 Conditions for Simple Harmonic Motion Question Bank

Practise IB Physics SL C.1.1 by testing whether restoring acceleration is proportional to displacement and directed towards equilibrium.

Exam points

State that restoring acceleration is proportional to displacement from equilibrium and points back to equilibrium.
Use a force or acceleration–displacement graph to justify whether motion is simple harmonic.
Check the small-displacement condition when a model is approximated as simple harmonic.

[Maximum number: 2]

This question is in two parts. Part 1 is about a thermistor circuit. Part 2 is about vibrations and waves.
Part 1 Thermistor circuit
The circuit shows a negative temperature coefficient (NTC) thermistor X and a $100 \mathrm{k} \Omega$ fixed resistor R connected across a battery.

Figure for Question C.1.1—Conditions for SHM question 1 — IB Physics SL

The battery has an electromotive force (emf) of 12.0 V and negligible internal resistance.

Define simple harmonic motion (SHM).

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C.1.1—Conditions for SHM question 1