ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 97

Question 481

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What is the significance of the equation dL/dt = τ in rotational dynamics?

It describes gravity
It measures heat
It is the rotational analog of Newton’s second law
It calculates area

Question 482

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Why is the cross product used in the definition of torque and angular momentum?

To add magnitudes
To simplify algebra
Because it captures the perpendicular component essential for rotation
To reduce computation

Question 483

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What determines the direction of the vector CP in rotational motion?

It is fixed in space
It points along the axis
It points from the axis to the particle in the plane perpendicular to the axis
It opposes velocity

Question 484

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How does the total angular momentum of a system behave in the absence of external torque?

It increases exponentially
It oscillates randomly
It dissipates
It remains constant in magnitude and direction

Question 485

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Why is the expression OC × v important in angular momentum analysis?

It measures temperature
It determines color
It contributes to the transverse component L_⊥
It calculates weight