Physics Question?

Question

A uniform bar has two small balls glued to its ends. The bar is 2.00 m long and with mass 4.00 kg, while the balls each have mass 0.500 kg and can be treated as point masses.

1. Find the moment of inertia of this combination about an axis perpendicular to the bar through its center.

2. Find the moment of inertia of this combination about an axis perpendicular to the bar through one of the balls.

3. Find the moment of inertia of this combination about an axis parallel to the bar through both balls.

4. Find the moment of inertia of this combination about an axis parallel to the bar and 0.500 m from it.

Answer 1

See a table and use the parallel axis theorom.