APFIVE Acceleration in Simple Harmonic Motion
A pendulum undergoes SHM with amplitude A. If the displacement is described by x = A·cos(ωt), at what time(s) during the first cycle is the magnitude of acceleration equal to half its maximum value?
A
When t = T/6 and t = 5T/6
B
When t = T/4 and t = 3T/4
C
When t = (1/3)cos⁻¹(1/2) and t = T/2 - (1/3)cos⁻¹(1/2)
D
When t = (1/ω)cos⁻¹(1/2) and t = (1/ω)cos⁻¹(-1/2)
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