System of particles & Rotational motion particles

What is essential for acrobats to maintain balance while performing?

• Understanding the center of mass and torque

• Having a strong partner

• Using safety nets

• Wearing special shoes

How do physicists define a rigid body?

• A body that can change shape easily

• A body that is made of liquid

• A body with a definite shape and negligible deformation

• A body that is always in motion

What type of motion does a rectangular block exhibit when sliding down an inclined plane?

• Vibrational motion

• Pure translational motion

• Random motion

• Pure rotational motion

What happens to the velocity of each particle in a cylindrical block rolling down an inclined plane?

• It remains constant

• It becomes zero

• It changes as the cylinder rolls

• It decreases steadily

What is the axis of rotation?

• The line along which a body is fixed and rotates

• The path a body follows during motion

• The center of mass of a body

• The point where all motion stops

What is precession in the context of rotational motion?

• The increase in speed of a rotating object

• The movement of a rigid body in a straight line

• The rotation of the axis of a spinning object around a point

• The deformation of a rigid body

Which of the following is an example of a rigid body with a non-fixed rotational axis?

• A stationary wheel

• A spinning top

• A ceiling fan

• A sliding block