The motion executed by a torsional pendulum is classified as

Step-by-step solution

In a torsional pendulum, the restoring torque is directly proportional to the angular displacement and is directed towards the mean position. This is given by the equation: = -C where C is the torsional constant of the suspension wire. This equation is the defining condition for angular simple harmonic motion. Since the pendulum undergoes to-and-fro motion about a stable equilibrium position, the motion is oscillatory. Furthermore, because this motion repeats itself after a fixed interval of time, it is also period