I need help turning this problem into a bond graph then into a block diagram that I can enter into simulink please

$3-8.$ A flywheel is a uniform disk of radius $R$ and thickness $t$ and is made

of a material of mass density $.$ Write the constitutive law for the $1-$

port representing the flywheel in its flow$-$momentum form. Evaluate the

inertance parameter for a steel disk $1$ in $.$ in thickness and $10$ in $.$ in diameter.