5–8% of the AP exam. Key topics: Conditions for simple harmonic motion: restoring force proportional to displacement, Frequency and period relationships, Representing and analyzing SHM with position, velocity, and acceleration graphs, Phase relationships between x(t), v(t), and a(t) in SHM, Energy in SHM: kinetic-potential energy exchange, Period of a mass-spring system, Period of a simple pendulum.
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