ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 253

Question 1261

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How does the uniform cross-section of the rod affect its centre of gravity?

It makes the rod longer
It increases the weight
It ensures the CG lies at the geometric centre
It has no effect

Question 1262

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What is the significance of marking vertical lines when finding CG experimentally?

They show wind direction
They are for decoration
They indicate magnetic poles
They represent the line of action of the net gravitational force

Question 1263

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In Example 6.8, why is the distance K₁G equal to 25 cm?

It is measured directly
By guesswork
K₁ is at 25 cm mark
K₁ is 10 cm from end A, G is at 35 cm, so 35 - 10 = 25 cm

Question 1264

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Why is the method in Fig. 6.25 not suitable for determining the CG of a liquid?

Liquids have no mass
They evaporate
Gravity doesn't act on them
Liquids cannot maintain a fixed shape when suspended

Question 1265

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What happens if you suspend a body from its centre of gravity?

It swings violently
It rotates continuously
It falls immediately
It remains in equilibrium in any orientation