Question

difference between torsional couple and restoring couple

Answer 1

Answer:

Twisting couple per unit twist = C ∅ = - I d² ∅/dt², where the Angle of twist at the lower end of the wire is ∅, restoring couple is C∅, where C is the torsional rigidity of the wire, and I is the moment of inertia of the disc about the axis of the wire. the '-' sign indicates that the couple C∅ decreases the twist.

Torsional rigidity is also known as the twisting couple per unit twist. As the name suggests it is the amount of twisting couple or torque required to twist the object by one unit angle, i.e., one radian.

Answer 2

Answer:

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Explanation: