ROTATIONAL MOTION

What is the plane of motion of a particle in a rigid body rotating about a fixed axis?

• Parallel to the axis
• At 45° to the axis
• Arbitrary plane
• Perpendicular to the axis of rotation

What is the relationship between the linear velocity and angular velocity vectors?

• v is parallel to ω
• v is parallel to r
• v is at 45° to both
• v is perpendicular to both ω and r

How is the direction of angular velocity determined using the right-handed screw rule?

• Opposite to screw motion
• Perpendicular to screw
• Direction in which the screw advances when rotated with the body
• Random direction

What is the angular velocity of a particle located on the axis of rotation?

• Zero
• Infinite
• Same as the body
• Undefined

In the vector form v = ω × r, what is the result if r is parallel to ω?

• ωr
• rω
• Zero vector
• ω + r