ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 54

Question 266

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How does a classical dancer control spin speed during a pirouette?

By pushing the floor repeatedly
By changing mass
By using air currents
By adjusting moment of inertia through body posture

Question 267

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What assumption about internal forces ensures net internal torque is zero?

Forces are perpendicular to the line
Forces increase with distance
Forces are negligible
Forces act along the line joining the particles

Question 268

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In the equation v = ω × r, what is the direction of the linear velocity vector?

Parallel to ω
Parallel to r
At 45 degrees to both
Perpendicular to both ω and r

Question 269

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What is the significance of the right-hand rule in rotational physics?

It measures force magnitude
It calculates speed
It balances forces
It determines the direction of axial vectors like angular velocity and torque

Question 270

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How does linear velocity of a rotating particle depend on its distance from the axis?

Inversely proportional
Independent of distance
Randomly varying
Directly proportional to the distance