Question
Download Solution PDFThe frequency of oscillation of a torsional pendulum is
Answer (Detailed Solution Below)
Option 4 :
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ST 1: UPSC ESE (IES) Civil - Building Materials
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Detailed Solution
Download Solution PDFCONCEPT
- Torsional Pendulum: A torsional pendulum consists of a disk (or some other object) suspended from a wire, which is then twisted and released, resulting in an oscillatory motion. The oscillatory motion is caused by a restoring torque which is proportional to the angular displacement.
EXPLANATION
- If the torsional constant of the wire is k and the body is rotated through an angle θ, then the torque produced is
- If I be the moment of inertia of the body about the verticle axis then the angular acceleration is
- where,
⇒ Option 4 is correct
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