What is AP Physics 1 Unit 7 about?
Unit 7 Oscillations is a current AP Physics 1 unit with an official multiple-choice weighting of 5–8%. This hub maps every topic in the unit to focused lessons, examples, representations and practice.
- Official unit weighting: 5–8% of the MCQ section.
- Every official topic in this unit has its own lesson and 42-MCQ/4-FRQ practice bank.
- Use the unit hub for sequencing; use the child topic pages for exact definitions and worked reasoning.
Unit 7 · Oscillations
Unit 7 develops simple harmonic motion through restoring forces, period/frequency, representations, and energy.
Unit 7 topic map
Use the unit hub to understand how the ideas connect; use each topic lesson for definitions, real examples, equations, worked reasoning, misconceptions and focused practice.
Defining Simple Harmonic Motion (SHM)
Simple harmonic motion is oscillation about an equilibrium position in which the restoring acceleration is proportional to displacement from equilibrium and directed toward equilibrium.
Frequency and Period of SHM
Period is the time for one complete oscillation, while frequency is the number of oscillations per unit time; for ideal SHM they are reciprocals and depend on system parameters, not amplitude in the ideal model.
Representing and Analyzing SHM
SHM can be represented consistently with position, velocity, acceleration, force, and energy graphs whose phases are linked throughout each cycle.
Energy of Simple Harmonic Oscillators
In ideal SHM with negligible dissipation, total mechanical energy remains constant while kinetic and potential energy exchange during the cycle.