SHMHard
Question
How long after the beginning of motion is the displacement of a harmonically oscillating particle equal to one half its amplitude if the period is 24s and particle starts from rest.
Options
A.12s
B.2s
C.4s
D.6s
Solution
y = a cos ωt
a/2 = a cos ωt
ωt = π/3
2π/24t = π/3
t = 4. sec.
a/2 = a cos ωt
ωt = π/3
2π/24t = π/3
t = 4. sec.
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