The moment of inertia of the disc used in a torsional pendulum about the suspension
Channel: Doubtnut
Date: 2020-06-28

The moment of inertia of the disc used in a torsional pendulum about the suspension wire is `0.2kg-m^2`. It oscillates with a period of 2s. Asnother disc is placed over the first one and time period of the system becomes 2.5s. Find the moment of inertia of the second disc about the wire.