ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 144

Question 716

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What is the vector nature of angular displacement for infinitesimal dθ?

It is radial
It is tangential
It is scalar
It is axial and along the rotation axis

Question 717

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How is the net torque related to angular acceleration?

τ = Iω
τ = F/r
τ = Iα
τ = dL/dt

Question 718

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What is the implication of a rigid body having no internal motion?

It cannot rotate
It has zero moment of inertia
Work done by external torques changes kinetic energy only
It has constant angular velocity

Question 719

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What is the role of the tangent in calculating work done?

It measures torque
It defines radial distance
It defines the direction of displacement
It determines angular speed

Question 720

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Why is the z-axis chosen as the rotation axis in the analysis?

Because it lies in the plane
Because it is horizontal
Because it is perpendicular to the plane of motion
Because it is arbitrary