সরল দোলন গতি

The displacement of a particle in S.H.M. is indicated by equation y = 10 sin(20t + π/3)y\ = \ 10\ sin(20t\ +\ \pi/3) where yy is in metres. The value of time period of vibration will be (in seconds):

হানি নাটস

y=10sin(20t+π/3)(t) y=10 \sin (20 t+\pi / 3) \ldots(t)

comparing it with general equation of motion of simple harmonic, wh get

A=10 m,ω=20pad/s A=10 \mathrm{~m}, \omega=20 \mathrm{pad} / \mathrm{s}

As, ω=2πT \omega=\frac{2 \pi}{T}

T=2πω=π10 \Rightarrow T=\frac{2 \pi}{\omega}=\frac{\pi}{10}

\therefore option (B) π/10 \pi / 10 is correct

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