13.Oscillations
hard

આકૃતિમાં દર્શાવેલ $M$ દળના એક પદાર્થની સરળ આવર્ત ગતિનો આવર્તકાળ $\pi \sqrt{\frac{\alpha \mathrm{M}}{5 \mathrm{~K}}}$ છે જયાં $\alpha=\ldots \ldots .$.

A

$12$

B

$15$

C

$30$

D

$35$

(JEE MAIN-2024)

Solution

$\mathrm{k}_{\mathrm{eq}}=\frac{2 \mathrm{k} \cdot \mathrm{k}}{3 \mathrm{k}}+\mathrm{k}=\frac{5 \mathrm{k}}{3}$

Angular frequency of oscillation $(\omega)=\sqrt{\frac{\mathrm{k}_{\mathrm{eq}}}{\mathrm{m}}}$

$(\omega)=\sqrt{\frac{5 \mathrm{k}}{3 \mathrm{~m}}}$

Period of oscillation $(\tau)=\frac{2 \pi}{\omega}=2 \pi \sqrt{\frac{3 \mathrm{~m}}{5 \mathrm{k}}}$

$=\pi \sqrt{\frac{12 \mathrm{~m}}{5 \mathrm{k}}}$

Standard 11
Physics

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