Posted by osho on Tuesday, March 6, 2012 at 2:05pm.
x = Acosωt
v = - Aωsinωt
a= - Aω^2cosωt
a/x= Aω^2cosωt/ Acosωt=ω^2 = 16
ω= 4 (rad/s)
T=2π/ω=2π/4 = π/2 = 1.57 s.
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