ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 140

Question 696

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What is the significance of the angle ∠P₁CP₁′ in rotational motion?

It measures linear distance
It gives the torque direction
It represents the angular displacement dθ of the particle
It indicates force direction

Question 697

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Why is the angular displacement dθ the same for all particles in a rigid body?

Because they have the same mass
Because they move at the same speed
Because the body rotates as a single unit without internal deformation
Because gravity affects them equally

Question 698

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What is the direction of the radius vector CP₁ in circular motion?

From P₁ to C
Along the tangent
From point C to point P₁
Perpendicular to the plane

Question 699

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What is the primary reason for considering only forces in planes perpendicular to the axis of rotation?

They are easier to calculate
They reduce friction
Forces in perpendicular planes can produce torque about the axis
They act at the center

Question 700

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What is the role of the origin O in torque calculation?

It is irrelevant
It defines angular speed
It is used to define position vector but only perpendicular component matters
It measures force