a side view of a car tire before it is mounted on a wheel. Model it as having two sidewalls of uniform thickness 0.695 cm and a tread wall of uniform thickness 2.50 cm and width 23.2 cm. Assume the rubber has a uniform density 1.10 103 kg/m3. Find its moment of inertia about an axis perpendicular to the page through its center.

Question

help!

Answer 1

first do the sidewalls
that is a uniform disk of radius Rout minus a uniform disk of radius Rin
(You did not give me the outside radius of tire and inside radius of tire)

Then you have the easy part, the thread which is simply m Rout^2
of course to do m you need to do the density * width * 2 pi Radius * thickness