MS-138 PVG TORSIONAL PENDULUM

To demonstrate the simple harmonic motion, often overlooked by
students, in explaining the meaning of moment of inertia and
moment of torsion and how they affect the period of vibration.
The one end of suspension wire hangs from a Clamp with the help
of a chuck nut and the other end is clamped to a solid brass disc of
125 mm. diameter and 12.5 mm. thick with the help of a chuck
nut. A heavy metal ring of the same metal (brass) and the same
outside diameter as the disc is included. Clamp fitted with boss
head and a hole to fix on the rod. When ring is placed on the disc,
the moment of inertia, and therefore the period of vibration of the
system, is Increased.