$11.$ A uniform slender bar $\backslash ($ A B $\backslash )$ of mass $\backslash ($ m $\backslash )$ is suspended from two springs as shown in figure $($i$)\backslash$& $($ii$).$ If spring $2$ breaks, determine; at that instant in both cases.

$($I$)$

$($a$)$ the angular acceleration of the bar,

$($b$)$ the acceleration of point $\backslash ($ A $\backslash )$ and

$($c$)$ the acceleration of point $\backslash ($ B $\backslash )$