====== Adjustable Rotational Inertia ====== {{:physicsdemos:mechanics:rotational_dynamics:adjustable_rotational_inertia.jpg?600|}} A long rod attached to a pulley is caused to rotate by a torque due to a mass that is hung from the pulley. The locations of two masses clamped to the rod are adjustable. The mass hung from the pulley is also variable. Prepared rack set-up details PIRA DCS 1Q20.10