ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 255

Question 1271

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Can the centre of mass be outside the material of the body?

No, never
Only in liquids
Yes, in objects like rings or boomerangs
Only in space

Question 1272

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What is the role of gravity in locating the centre of gravity experimentally?

It pushes the body sideways
It disappears
It provides the force that aligns the body to reveal the CG
It heats the body

Question 1273

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What would happen if the knife edges were not at equal distances from the ends?

The rod would fly
Nothing would change
The mass would change
The symmetry would be broken and reactions would change

Question 1274

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How does the uniform cross-section affect the problem in Example 6.8?

It makes the rod heavier
It changes the length
It ensures mass is evenly distributed
It has no effect

Question 1275

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Why is the moment of W₁ positive in the equation of Example 6.8?

Because it is a weight
Because it is large
Because it acts downward
Because it produces an anticlockwise rotation about G