ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 91

Question 451

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What happens to the perpendicular component of angular momentum during fixed-axis rotation?

It increases
It decreases
It remains constant
It oscillates periodically

Question 452

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Which component of external torque is considered in rotation about a fixed axis?

Torque perpendicular to the axis
Torque in any direction
Only the component along the axis of rotation
Sum of all torque components

Question 453

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Why is angular momentum conserved in central force motion?

Because energy is constant
Because speed is constant
Because the force is parallel to position vector, so torque is zero
Because mass is uniform

Question 454

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What is the role of the inertia tensor in general rotational motion?

It measures temperature
It calculates linear speed
It relates angular momentum and angular velocity vectors
It determines color

Question 455

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How does the moment of inertia affect the rotational period of a physical pendulum?

It has no effect
Higher I decreases the period
Higher I increases the period of oscillation
It reverses direction