ROTATIONAL MOTION

What is the motion of a freely falling rigid body with no spin?

• Rotation
• Combined motion
• Pure translation
• Oscillation

How is rotational motion defined for a fixed rigid body?

• It cannot move at all
• It only translates
• It is random
• It is rotation about a fixed or moving axis through a pivot point

What remains constant in the orientation of a body during pure translation?

• The length of OP
• The speed of P
• The angle α made by OP with a fixed direction
• The mass of O

What type of motion is a rolling cylinder on an incline?

• Pure rotation
• Pure translation
• Combination of translation and rotation
• Vibrational motion

What is the main idea behind limiting rotational motion to a fixed axis?

• To ignore real-world cases
• To make it harder
• To simplify the study of rotation
• To focus on translation