Question

There is a uniform, solid cuboid box of mass 12 kg that has a length of 5 meters, breadth of 2 meters, and a height of 3 meters. The box rotates about the axis AB, that lies along one of the 2-meter edges, as shown in the figure. Find the moment of inertia of the box about the axis AB.

Answer 1

Answer:

Given that

2

1

Iω

2

=

2

1

mv

2

∴

2

1

×5kgm

2

×6

2

rad/s=

2

1

×20kg×v

2

∴v

2

=9

∴v=3m/s