ROTATIONAL MOTION

What is the formula for the axial component of total angular momentum of a rotating body?

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

What is the expression for L_⊥ in a rotating rigid body?

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

What is denoted by L_z in the context of a rotating rigid body?

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

What happens when you sum the angular momentum contributions of all particles in a rigid body?

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

What is the formula for the axial component of angular momentum of a particle in rotation?

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