Question

The motion of a torsional pendulum is

• A. Periodic
• B. Oscillatory
• C. Angular simple harmonic
• D. all of the above

Answer 1

Answer: (D)

all of the above

Answer 2

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.