ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 145

Question 721

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What happens to work done when dθ is zero?

Work is maximum
Work is negative
No work is done
Work is infinite

Question 722

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What is the significance of the cross product in torque definition?

It calculates linear force
It gives scalar value
It gives both magnitude and direction of torque
It measures angular speed

Question 723

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What is the condition for maximum torque due to a force?

When force is parallel to radius
When force is at 45° to radius
When force is perpendicular to the radius vector
When force is along the axis

Question 724

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What is the role of the radius vector in torque calculation?

It measures angular speed
It determines mass distribution
It determines the lever arm for the force
It defines linear momentum

Question 725

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In a rigid body, what remains the same for all particles during rotation about a fixed axis?

Linear velocity
Linear displacement
Angular displacement dθ
Tangential acceleration