Large Torsional Pendulum

Purpose

To demonstrate torsional SHM and to show the effect of moment of inertia on the period.

Equipment

Large torsional pendulum, as photographed.

Images

g1-42

Description

This large device executes torsional SHM on a heavy wire. Adding a cylindrical shell to the flat base (as in the photograph) increases the moment of inertia and very noticeably increases the period.◙

References

Directions for use of Cat. No. 75260 Torsion Pendulum, Central Scientific Co., Chicago, Ill.