ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 341

Question 1701

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How does the torque due to a force depend on the point of reference?

It is always the same
It depends on mass
It changes with the choice of origin
It is independent of direction

Question 1702

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Why is the total angular momentum conserved in an isolated system?

It has no internal energy
It moves in a straight line
No external torque acts on it
It is symmetric

Question 1703

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What is the main assumption that allows τ_int = 0?

Particles are point-like
Velocities are constant
Internal forces are central
External fields are absent

Question 1704

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How does a planet maintain constant angular momentum in orbit?

It uses internal fuel
It experiences no forces
Gravitational force is central and produces no torque about the sun
It rotates on its axis

Question 1705

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What happens to angular momentum during an internal explosion in space?

L is destroyed
L increases suddenly
Total L remains unchanged
L becomes random