Question

A wheel comprises of a ring of radius r and mass m and three spokes of a mass

Answer 1

Explanation:

The moment of inertia of the ring is I

1

=MR

2

The moment of inertia of every spoke is I

2

=

3

1

mR

2

since O is at the end of each spoke.

Total moment of inertia I=I

1

+3I

2

since there are three spokes.

⟹I=MR

2

+mR

2

⟹I=(M+m)R

2