One end of a straight uniform $$1 \; m$$ long bar is pivoted on horizontal table. It is released from rest when it makes an angle $$30°$$ from the horizontal (see figure). Its angular speed when it hits the table is given as $$\sqrt{n}$$ rad $$s^{-1}$$, where $$n$$ is an integer. The value of $$n$$ is ___________.