Question

Determine la inercia rotacional de una varilla de 4 m de largo y 2 Kg de mesa si su eje de rotación esta situado a la mitad de la varilla.

Answer 1

I = 2.667 kg m²

Step-by-step explanation:

The moment of inertia of a body can be calculated by the expression

I = ∫ L² dm

For high symmetry bodies the expressions of the moment of inertia are tabulated, for a rod with its axis of rotation at its midpoint it is

I =
`(1)/(12)` m L²

let's calculate

I =
`(1)/(12)` 2 4²

I = 2.667 kg m²