ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 270

Question 1346

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What condition must be satisfied for the cardboard to be in translational equilibrium?

The torque must be maximum
The mass must be zero
The reaction force must equal the weight Mg
The object must rotate

Question 1347

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What force does the pencil tip exert on the cardboard during balancing?

Gravitational force
Electromagnetic force
Tension force
Vertically upward reaction force

Question 1348

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Why does the cardboard remain horizontal when balanced at point G?

Because air pressure holds it
Because it has uniform density
Because the pencil is sharp
Because the total gravitational torque about G is zero

Question 1349

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How can you experimentally locate the centre of gravity of an irregular cardboard?

By weighing it in water
By measuring its thickness
By hanging it from a string
By balancing it on the tip of a pencil

Question 1350

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What is the primary purpose of identifying the centre of gravity in a body?

To measure its mass
To calculate its volume
To determine the point where gravitational torque is zero
To find its geometric center