Q3:

Elizabeth is building a model race car. She wants the car to be as responsive as
possible, so she is looking for a drive wheel with the smallest moment of inertia. The figure
shows the configuration of the drive wheel, π· π , in relation to the engineβs output shaft,
π , and the two drive shafts, π· π ο§ and π· π ο¨ .

She has two options for the drive wheel. The specifications for each drive wheel are detailed
in the table.

What is the moment of inertia of drive wheel A about a perpendicular axis passing through
the center of the disk? Give your answer in gram square millimeters.

What is the moment of inertia of drive wheel B about a perpendicular axis passing through
the center of the disk? Give your answer in gram square millimeters.

Which drive wheel should she choose to maximize the responsiveness of the model car?