The axis X and Z in the plane of a disc aremutually perpendicular and

1.	The axis X and Z in the plane of a disc aremutually perpendicular and Y-axis isperpendicular to the plane of the disc. If themoment of inertia of the body about X and Yaxes is respectively 30 kg m2 and 40 kg mề thenM.I. about Z-axis in kg m² will be :-(1) 70 (2) 50 (3) 10 (4) Zero
Answer» Answer: The M.I about Z AXIS is 70 kg m^2 Explanation: According to the problem the axis X and Z and are PERPENDICULAR. The moment of inertia of the BODY along X axis is 30 kg m^2 and along with Y axis it is 40 kg m^2 Let the moment of inertia of the body is mZ along with Z axis Now we know that, m(parallel to the plane ) = Σ m( perpendicular and lying in the plane) => mZ = mX + mY Now putting the VALUES, => mZ = 30 + 40 => mZ = 70

The axis X and Z in the plane of a disc aremutually perpendicular and Y-axis isperpendicular to the plane of the disc. If themoment of inertia of the body about X and Yaxes is respectively 30 kg m2 and 40 kg mề thenM.I. about Z-axis in kg m² will be :-(1) 70 (2) 50 (3) 10 (4) Zero

Answer»

Answer:

The M.I about Z AXIS is 70 kg m^2

Explanation:

According to the problem the axis X and Z and are PERPENDICULAR.

The moment of inertia of the BODY along X axis is 30 kg m^2 and along with Y axis it is 40 kg m^2

Let the moment of inertia of the body is mZ along with Z axis

Now we know that,

m(parallel to the plane ) = Σ m( perpendicular and lying in the plane)

=> mZ = mX + mY

Now putting the VALUES,

=> mZ = 30 + 40

=> mZ = 70

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The axis X and Z in the plane of a disc aremutually perpendicular and Y-axis isperpendicular to the plane of the disc. If themoment of inertia of the body about X and Yaxes is respectively 30 kg m2 and 40 kg mề thenM.I. about Z-axis in kg m² will be :-(1) 70 (2) 50 (3) 10 (4) Zero​

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The axis X and Z in the plane of a disc aremutually perpendicular and Y-axis isperpendicular to the plane of the disc. If themoment of inertia of the body about X and Yaxes is respectively 30 kg m2 and 40 kg mề thenM.I. about Z-axis in kg m² will be :-(1) 70 (2) 50 (3) 10 (4) Zero