A torsional system with discs of moment of inertia I1 and I2 are shown in figure, which are gear driven. The ratio of speed of shaft B to shaft A is G. The equivalent moment of inertia of disc on shaft B at the speed of shaft ‘A’ is equal to

A torsional system with discs of moment of inertia I1 and I2 are shown

1.	A torsional system with discs of moment of inertia I1 and I2 are shown in figure, which are gear driven. The ratio of speed of shaft B to shaft A is G. The equivalent moment of inertia of disc on shaft B at the speed of shaft ‘A’ is equal to
A.	GI2
B.	G2I2
C.	I2/G
D.	I2/G2
Answer» C. I2/G

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A torsional system with discs of moment of inertia I1 and I2 are shown in figure, which are gear driven. The ratio of speed of shaft B to shaft A is G. The equivalent moment of inertia of disc on shaft B at the speed of shaft ‘A’ is equal to

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