Torsion Pendulum is a device used to demonstrate simple harmonic motion. It consists of a solid brass disc (12.5 cm in diameter and 1.25 cm thick) suspended by a wire. This pendulum helps explain key concepts like moment of inertia and moment of torsion and how they influence the period of vibration. FEATURES: • A brass chuck nut (pin vise) is used to secure the suspension wire to the disc and a Universal Clamp.