A torsional system with discs of moment of inertia I₁ and I₂ as shown in the

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A torsional system with discs of moment of inertia I₁ and I₂ as shown in the below figure, is gear driven such that the ratio of speed of shaft B to shaft A is 'G'. Neglecting the inertia of gears, the equivalent inertia of disc on shaft B at the speed of shaft A is equal to

Options:

A . G.I₂

B . G².I₂

C . I₂/G

D . I₂/G²

Answer: Option B

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