ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge

Question 126

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A non-uniform bar is suspended by two strings making angles of 36.9° and 53.1° with the vertical. What determines the location of its center of gravity?

The length of the strings
The color of the bar
The temperature
The balance of forces and torques

Question 127

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What role does symmetry play in the alignment of L and ω?

It increases angular speed
It reduces total mass
It changes the direction of force
It ensures that L and ω are parallel

Question 128

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When is the equation L = Iω valid for a rotating rigid body?

For all rotating bodies
When I is not constant
Only for point masses
When the body rotates about a fixed symmetric axis

Question 129

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When are the angular momentum vector L and the angular velocity vector ω parallel?

Always
Only in vacuum
When mass is zero
When rotation is about a fixed symmetric axis

Question 130

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Is the angular momentum of the two-particle system described in the previous question the same about any point in space?

No
Only about the midpoint
Depends on the observer
Yes

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