ROTATIONAL MOTION

Why does a rolling cylinder move down an incline?

• Only due to rotation
• Only due to translation
• Due to combination of translation and rotation
• Due to air pressure

What is the trajectory of the center of mass during pure translation?

• Circular path
• Random zigzag
• Stationary
• Translational trajectory Tr1 or Tr2

If a rigid body’s orientation changes during motion, what can be inferred?

• It is at rest
• It is undergoing pure translation
• Its mass is changing
• It is undergoing rotation

What type of motion is exhibited by a heavy book sliding across a table without spinning?

• Rotation
• Rolling
• Pure translation
• Oscillation

What is the significance of point O in Fig. 6.5(b)?

• It is the center of gravity
• It is the point of maximum speed
• It is the tip of the blade
• It is the fixed pivot point