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RRB Junior Engineer / DMS / CMA 2019 · Question 3541 of 3719

The unit of moment of inertia of mass is-

  1. Am 2/kg
  2. Bkg/m
  3. Ckg-m 2Correct
  4. Dkg/m 2

Answer: C. kg-m 2

Explanation

Concept: Moment of Inertia (I) : Moment of inertia is the inertia of a rotating body concerning its rotation. Moment of inertia is also known as rotational inertia. I = Σ MR 2Where I is the momentofinertia of the body, M is the mass of the body, R is the radius SI unit is kgm2. Dimension formula is [M L 2 T 0]. The SI unit of the moment of inertia is kgm2.

Source: RRB JE 2019 (CBT 2) (ME) Previous Year Paper (31 Aug 2019) — prepp.in solved-paper PDF (answer key with explanations) · reliable-secondary

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