ROTATIONAL MOTION

What is the primary condition for a cylinder to roll without slipping?

• The center velocity is zero
• Angular velocity is zero
• The velocity of the point of contact is zero
• The mass is low

What causes a rigid body to rotate when it is fixed along a line?

• Gravity alone
• Application of torque
• Air pressure
• Magnetic field

What is the motion of a merry-go-round?

• Translational motion
• Rolling motion
• Oscillation
• Rotation about a fixed axis

What is the direction of the linear velocity of a point on a rotating rigid body?

• Radially outward
• Radially inward
• Along the axis
• Tangential to its circular path

What is the motion of a door when it is opened or closed?

• Pure translational motion
• Rolling motion
• Oscillation
• Rotation about a fixed axis