Answer
$L=I\omega$
$\omega=2\times3.1416\times(1\div T)$
Work Step by Step
First of all, we need to find out the magnitude of the constant constant angular velocity.
for that, $\omega=2\times3.1416\times(1\div T)$
after that, we have to find out the magnitude of angular momentum through the formula $L=I\omega$
Then, I=1.8 kg.m^{2}
and \omega=2.5 rad/s^{2}.
so, L=4.5 kgm^{2}/s
