Question

Which has highest inertia: solids made of aluminum,steel and wood of same shape and same volume.

Answer 1

Inertia is a physical quantity depending on the mass parameter. It is a well known fact that for a same mass, highest mass of the material would be of steel.

One of the most important reasons for this being that the density of steel is quite high as compared to that of wood. In other words the force of attraction is on the higher side in steel.