ROTATIONAL MOTION

What is the angular velocity of a body at rest?

• Infinite
• Undefined
• Equal to linear velocity
• Zero

How is the magnitude of angular velocity related to the time period of rotation?

• ω = T/2π
• ω = π/T
• ω = 2πT
• ω = 2π/T

What is the direction of the angular velocity vector for a body rotating anticlockwise when viewed from above?

• Downward along the axis
• Horizontally outward
• Tangential to the path
• Upward along the axis

What happens to the angular velocity of a rigid body if it rotates faster?

• It decreases
• It remains constant
• It becomes negative
• It increases

What is the significance of the cross product in rotational kinematics?

• It calculates angular displacement
• It measures radius
• It gives the correct direction of linear velocity
• It replaces time derivatives