Question

The motion of a torsional pendulum is

• A. periodic
• B. oscillatory
• C. simple harmonic
• D. angular simple harmonic

Answer 1

Answer: (A), (B), (D)

periodic
oscillatory
angular simple harmonic

The Motion of a rigid body supported by an mass less in-extensible string is called as the motion of Torsional Pendulum.

Torsional Pendulum is the part of Physical Pendulum, which is having an Time Period of,

$T=2\pi \sqrt{\frac{I}{K}}$

where, $I$ is the moment of Inertia, and $K$ is the Torsion constant.

This Motion is angular Simple Harmonic Motion.

Since, it is Angular S.H.M. , it must be Oscillatory. Also, It must be Periodic.

It cannot be simple Harmonic Motion, because simple Harmonic Motion does not involves Rotational Analogy.