Question

Spring of spring constant `1200 Nm^(-1)` is mounted on a smooth fricationless 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

A. `5 rad//sec`
B. `30 rad//sec`
C. `10 rad//sec`
D. `20 rad//sec`

Answer 1

Correct Answer - D
Angular frequency `omega = sqrt((K)/(m)) = sqrt((1200)/(3)) = 20"rad"//"sec"`