IDNLearn.com is your go-to platform for finding reliable answers quickly. Ask anything and receive prompt, well-informed answers from our community of knowledgeable experts.
Answer:
Looks like you have:
a = -.324 cos 2.5 t
In this case ω^2 A = .324
ω = 2.5
f = ω / (2 * pi) = 2.5 / 6.28 = .40 / sec