ROTATIONAL MOTION MCQ Quiz: GKFix - Bridge of Knowledge - Page 357

Question 1781

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What is the rotational analogue of Newton’s second law for a system of particles?

F = ma
dP/dt = F_ext
τ = Iα
dL/dt = τ_ext

Question 1782

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What is the consequence of τ_ext = 0 on the system's angular momentum?

L increases linearly
L decreases to zero
L oscillates
L remains constant

Question 1783

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What happens to internal torques if inter-particle forces are central?

They add constructively
They cause rotation of the center of mass
They cancel in pairs
They depend on angular velocity

Question 1784

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How is the total angular momentum of a system defined?

L = Σ m_i v_i
L = Iω
L = Σ l_i, where l_i is angular momentum of ith particle
L = r × P_total

Question 1785

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What does the equation dL/dt = τ_ext represent?

Law of inertia for rotation
Conservation of energy
Rotational analogue of Newton’s second law for systems
Kinematic equation for rotation