Question

moment of inertia of semicircular lamina​

Answer 1

Answer: Moment of inertia of semicircular lamina​ is same as that of a circular disc having the same mass.

Explanation:

The moment of inertia on the mass m and at the distance r is given as mr^2. The moment of inertia on the two point masses of mass m/2 of each at the distance r is given as

m/2r^2+ m/2r^2 = mr^2.