A particle has simple harmonic motion. The equation of its motion is x=5sin4t−π6 , where x is its displacement. If the displacement of the particle is 3 units, then its velocity is
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a
2π3
b
5π6
c
20
d
16
answer is D.
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Detailed Solution
From the given equation, a = 5 and ω=4∴v=ωa2−y2=4(5)2−(3)2=16