A-LevelPhysicsOscillations9702/12 · Feb/Mar 2019 · Q61 Mark
A mass on the end of a spring bounces up and down as shown, after being released at time t = 0. [Figure 6.1] Which graph shows how the velocity varies with time?
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A[Graph A: Velocity up starts at a positive maximum, then decreases to zero, becomes negative, and returns to zero, following a cosine curve.]
B[Graph B: Velocity up starts at zero, increases to a positive maximum, then decreases to zero, becomes negative, and returns to zero, following a sine curve.]
C[Graph C: Velocity up starts at zero, increases to a positive maximum, then decreases to zero, becomes negative, and returns to zero, with a higher frequency than B.]
D[Graph D: Velocity up starts at zero, increases to a positive maximum, then decreases to zero, becomes negative, and returns to zero, with a lower frequency than B.]
✓ Correct answer
A: [Graph A: Velocity up starts at a positive maximum, then decreases to zero, becomes negative, and returns to zero, following a cosine curve.]
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