A Piece of Thin Wire of Mass M and Length

question 39

Multiple Choice

A piece of thin wire of mass m and length 3a is bent into an equilateral triangle. Find the rotational inertia (moment of inertia) of the wire when it is rotating about an axis perpendicular to the plane of the triangle and passing through one of its vertices.

• A) ma²
• B) ma²
• C) ma²
• D) ma²
• E) ma²

---

Definitions:

Intense IR Absorption

A strong absorption of infrared light, indicating the presence of certain bond vibrations within a molecule, observed in infrared spectroscopy.

IR Spectroscopy

A technique that involves the interaction of infrared radiation with matter, primarily used to identify and study chemicals through their vibration and rotation.

C=C

A double bond between two carbon atoms, indicative of unsaturation within organic molecules and affecting molecular geometry and reactivity.

C≡C

Denotes a triple covalent bond between two carbon atoms, a characteristic feature of alkynes.