When a mass $m$ is hung from the lower end of a spring of neglibgible mass, an extension $x$ is produced in the spring. The time period of oscillation is
When a mass $m$ is hung from the lower end of a spring of neglibgible mass, an extension $x$ is produced in the spring. The time period of oscillation is
- A
$T = 2\pi \sqrt {\frac{x}{{mg}}} $
- B
$T = 2\pi \sqrt {\frac{gx}{{m}}} $
- C
$T = 2\pi \sqrt {\frac{x}{{g}}} $
- D
$T = 2\pi \sqrt {\frac{x}{{2g}}} $
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