The angular frequency of motion whose equation is 4(d²y/dt²) + 9y = 0 is (y = displacement and t = time).
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The angular frequency of motion whose equation is 4(d²y/dt²) + 9y = 0 is (y = displacement and t = time).

G1 Physics · Accepted Answer

4(d²y/dt²)+9y=0 ⇒ d²y/dt²+(9/4)y=0. Comparing with ÿ+ω²y=0 gives ω²=9/4 and ω=3/2 rad s⁻¹. Correct answer: C.