ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 70

Question 346

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What determines the direction of the vector resulting from a cross product a × b?

Left-hand rule
Direction of the longer vector
Right-hand rule or right-handed screw rule
Direction of the shorter vector

Question 347

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What is the formula for the linear velocity of a particle in a rigid body rotating about a fixed axis?

v = ω + r
v = ω · r
v = ω / r
v = ω × r

Question 348

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How is angular velocity represented as a vector?

It has magnitude only and no direction
Direction is tangential to the circular path
Magnitude is v/r and direction is radial
Its magnitude is ω = dθ/dt and direction is along the axis of rotation

Question 349

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What is true about angular velocity in a rigid body rotating about a fixed axis?

Angular velocity increases with distance from the axis
Different points have different angular velocities
Only the center has angular velocity
All points in the body have the same angular velocity at any instant

Question 350

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In rotation about a fixed axis, what is the path of motion for each particle of the rigid body?

Straight line parallel to the axis
Elliptical path around the center
Circular path in a plane perpendicular to the axis
Random zig-zag motion