Which of the following statements correctly identifies the condition under which the…
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Energy and Momentum of Rotating Systems · Energy and Momentum of Rotating Systems
Problem
Which of the following statements correctly identifies the condition under which the total angular momentum of a system remains constant about a particular axis?
(a) It is conserved about that axis whenever the net external τext about the axis on the system is zero.
(b) It is conserved about any axis whenever the net external Fext on the system is zero.
(c) It is conserved only if every part of the system remains perfectly rigid during the motion.
(d) It cannot be conserved if any internal forces act between objects within the system.