1Q Rotational Dynamics# 1Q10 Moment of Inertia# Bicycle-wheel pendulum Matchbox and wineglass Physical pendulum_2 Maximum rotational inertia Rolling down a wide gutter Rolling downhill 1Q20 Rotational Energy# Dropping rolls of toilet paper Maxwheel Rolling down a wide gutter Rolling downhill Yo-yo 1Q30 Transfer of Angular Momentum# 1Q40 Conservation of Angular Momentum# Balls on a rotating ramp Bicycle wheel and swivel chair Counter-rotating disks Dumb-bell How an astronaut can turn around in free space Magnet symmetry Matchbox and wineglass Pirouette Playing tennis Pulling the rug Spinning bouncing ball Sweet spot Tippe top Train and track Vibrating stopwatch 1Q50 Gyros# Nutation_1 Nutation_2 Precession_1 Precession (2) Precession_3a Precession_3b Precession_4_AND Nutation_3 1Q60 Rotational Stability# Dumb-bell Maximum rotational inertia Percussionpoint_1 Percussionpoint_2 rugbyball Sleeper Stable wheel Tippe top