Three equal masses m are rigidly connect...

Three equal masses `m` are rigidly connected to each other by massless rods of length `l` forming and equilateral triangle, as shown above. The assembly is to be given an angular velocity `omega` about an axis perpendicular to the triangle. For fixed `omega`, what is the ratio of the kinetic energy of the assembly for an axis through `B t` compared with that for an axis through `A`.
.

`1:2`

`2:1`

`3:2`

`1:3`

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