ROTATIONAL MOTION

What is the main assumption in deriving L_z = I ω?

• The body is spherical
• The body is symmetric about the rotation axis
• The mass is zero
• The velocity is constant

How does the expression for L_z relate to Newton’s second law in rotation?

• They are unrelated
• dL_z/dt = τ_z is the rotational analog
• L_z = F r
• τ = m a r

What is the role of the origin in angular momentum calculation?

• It has no role
• It defines the reference point for position vectors
• It determines mass
• It sets the time

What determines whether L equals L_z?

• Temperature
• External force
• Symmetry of the body about the rotation axis
• Linear speed

What is the implication of L = I ω k̂?

• The body is translating
• The torque is zero
• The body is symmetric and rotating about a symmetry axis
• The angular velocity is changing