ROTATIONAL MOTION Quiz

• L_z = m v r
• L_z = I ω k̂
• L_z = r × p
• L_z = τ t

• L_⊥ = Σ m_i r_i² ω
• L_⊥ = Σ m_i (OC_i × v_i)
• L_⊥ = I ω
• L_⊥ = m v r

• Total linear momentum
• The component of total L along the z-axis
• Angular speed
• Net external torque

• You get zero
• You get the total angular momentum vector L
• You get only linear momentum
• You get moment of inertia

• l_z = m r⊥ ω
• l_z = m r⊥² ω k̂
• l_z = m v r⊥
• l_z = I ω²