ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 276

Question 1376

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Can a body have more than one centre of gravity?

Yes, depending on color
Yes, for liquids
No, a rigid body has only one centre of gravity
Yes, always two

Question 1377

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Which physical law explains why the reaction force equals the weight in equilibrium?

Newton's first law
Law of gravitation
Conservation of momentum
Newton's third law of motion

Question 1378

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What is the unit of gravitational torque?

Kilogram-meter
Meter per second squared
Watt
Newton-meter (N·m)

Question 1379

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How does symmetry influence the location of the centre of gravity?

It has no influence
It shifts the CG randomly
It places the CG at the geometric centre for uniform objects
It hides the CG

Question 1380

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Why is the pencil tip narrow in the balancing experiment?

To increase friction
To reduce weight
To conduct electricity
To minimize the contact area and precisely locate the balance point