The moment of inertia of a set of dumbbells, considered as two mass points m separated by a distance 2L about the axis A, is A) mL². B) mL². C) 2mL². D) mL². E) 4mL².

Question

Quizplus · Accepted Answer

The moment of inertia of a set of dumbbells, considered as two mass points m separated by a distance 2L about the axis A, is given by the formula: I = 2mL^2 So, substituting for L, we get: I = 2m(^-)^2 Expanding the square, we get: I = 2m(^{^2 - 2 +}^2) Simplifying, we get: I = 2m(².⁺) Therefore, the correct answer is C.

The Moment of Inertia of a Set of Dumbbells, Considered