Quick Answer: Torsion Pendulum uses a solid brass disc 12.5 cm in diameter and 1.25 cm thick, hung on a suspension wire from a universal clamp, with a heavy brass ring of the same outside diameter.
Last updated: October 2026
Key Features
Solid brass disc, 12.5 cm diameter, 1.25 cm thick
Heavy brass ring with the same outside diameter as the disc
Suspension wire held by a chuck nut at each end
Upper end hangs from a universal clamp
Also available with a 6 inch brass disc
Technical Specifications
Specification
Value
Disc
Solid brass, 12.5 cm diameter, 1.25 cm thick
Ring
Heavy brass, same outside diameter as disc
Suspension
Wire from a universal clamp, chuck nut at each end
Option
6 inch brass disc
About This Product
Placing the brass ring on the disc raises the moment of inertia of the system and therefore its period of vibration, so periods with and without the ring can be compared. Chuck nuts hold the suspension wire at both ends, one at the universal clamp and one at the disc, in this Applied Mechanics torsion set-up.
Frequently Asked Questions
Q1. What is the brass ring for? When the ring is placed on the disc, the moment of inertia and therefore the period of vibration of the system increase.
Q2. Is a larger disc available? Yes. The pendulum is also available with a 6 inch brass disc.
Lab Equipments Ambala exports to schools, colleges and distributors in countries such as Uruguay, Uganda and Togo.
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