Spring of spring constant 1200 , Nm^ -1 is mounted on a smooth fr… - Vidyadip

MCQ

Spring of spring constant $1200\, Nm^{-1}$ is mounted on a smooth frictionless surface and attached to a block of mass $3\, kg$. Block is pulled $2\, cm$ to the right and released. The angular frequency of oscillation is .... $ rad/sec$

A
$5$
B
$30$
C
$10$
✓
$20$

✓

Answer

Correct option: D.

$20$

d
Angular frequency

$\omega=\sqrt{\frac{\mathrm{K}}{\mathrm{m}}}=\sqrt{\frac{1200}{3}}=20 \mathrm{rad} / \mathrm{sec}$

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