ROTATIONAL MOTION

3280 practice questions with explanations

Page 220 of 656 · Q1096–1100

1096 Question 1096

What is the moment of inertia of a body if all its mass is concentrated at a distance k from the axis?

Mk
Mk²
M²k
M/k²

1097 Question 1097

Which of the following best describes rotational inertia?

It is the speed of rotation
It is the force causing rotation
It is the resistance of a body to change in its rotational motion
It is the energy of rotation

1098 Question 1098

For a pair of masses connected by a light rod and rotating about their center of mass, what happens to the moment of inertia if the separation distance is doubled?

It doubles
It becomes four times larger
It remains the same
It halves

1099 Question 1099

What is the role of a flywheel in an automobile engine?

To cool down the engine
To convert linear motion to rotational motion
To ensure smooth rotation by resisting speed fluctuations
To reduce fuel consumption

1100 Question 1100

Which of the following is true about the moment of inertia of a system of particles?

It is the average of the masses times distance
It is the sum of the products of each mass and the square of its distance from the axis
It is the total mass divided by distance
It is the product of total mass and average distance

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