Specify Mass Properties. Now enter the body's mass and inertia tensor:
Use the data from the table Body Data for the Simple Pendulum.
In the Mass field, enter 2490 and change the units to g (grams).
In the Inertia field, enter [1.25e-4 0 0; 0 0.208 0; 0 0 0.208] and leave the default units as kg-m2.