ROTATIONAL MOTION

What is the angular displacement of a body that rotates with angular velocity ω for time t, starting from θ₀?

• θ = ωt
• θ = θ₀ + ωt
• θ = ½ωt²
• θ = ω²/(2α)

If a body starts rotating from rest with angular acceleration α, what is its angular velocity after time t?

• ω = ½αt²
• ω = αt
• ω = θ/t
• ω = √(2αθ)

What is the implication of a curved angular velocity-time graph?

• Angular velocity is constant
• Angular displacement is zero
• Angular acceleration is not constant
• The body is at rest

How does the angular displacement compare to the actual path length traveled by a particle on the rim?

• They are the same
• Angular displacement is always greater
• Angular displacement is in radians, path length is in meters
• Path length is dimensionless

What is the angular acceleration of a stationary wheel?

• Infinite
• Negative
• 0 rad/s²
• Positive