alleryThe phase constant can be found from the displacement at time:
ATwo periods
BTime zero
COne period
DHalf period
Answer & Solution
Correct answer: B. Time zero
1. Amplitude and displacement together fix the phase.
2. The displacement is read at the start of the motion.
3. That is at time zero.
_Source: syllabus Physics Part II, Chapter 14, Oscillations._
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