ROTATIONAL MOTION

In which type of motion do different particles of a rigid body have different velocities at the same instant?

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

What happens to the orientation of a line segment OP in a rigid body during pure translation?

• It changes randomly
• It increases continuously
• It remains unchanged
• It decreases continuously

Which type of motion involves every particle of a rigid body having the same velocity at any instant?

• Rotation
• Pure translation
• Oscillatory motion
• Combination of translation and rotation

What is the angular speed in rad/s for a body rotating at 1 revolution per second?

• 1 rad/s
• π rad/s
• 2π rad/s
• 4π rad/s

What is the frequency of rotation if a body makes 60 revolutions per minute?

• 60 Hz
• 6 Hz
• 1 Hz
• 0.1 Hz