ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge

Question 1026

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What is the effect of a non-uniform mass distribution on the moment of inertia?

It has no effect
It always increases I
It can increase or decrease I depending on whether mass is concentrated near or far from the axis
It makes I unpredictable

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For a solid sphere, what is the radius of gyration about its diameter?

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What is the moment of inertia of a triangular lamina about an axis through its centroid and perpendicular to its plane?

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How does the moment of inertia of a system depend on the choice of coordinate system?

It changes with the coordinate system
It depends on the position and orientation of the axis of rotation, not the coordinate system
It is always zero in polar coordinates
It increases in 3D systems

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What is the physical significance of the radius of gyration in engineering design?

It measures the cost of materials
It helps in comparing the efficiency of different cross-sectional shapes for beams and columns
It determines the color of paint needed
It calculates the number of workers required