$1$ pts

A $0\mathrm{.}300$ kg object is attached to the end of a spring. The object is displaced $12\mathrm{.}0$ cm to the right of equilibrium and released on a horizontal, frictionless surface. After the spring is released it oscillates with a period of $0\mathrm{.}400$ s $.$

Calculate the spring constant.

$60\mathrm{.}0$ N$/$m

$80\mathrm{.}0$ N$/$m

$52\mathrm{.}0\frac{N}{m}$

$247$ N$/$m

$74\mathrm{.}0$ N$/$m