If a trapeze artist rotates once each second while sailing through the air and contracts to reduce her rotational inertia to one-third of what it was, how many rotations per second will result?

Answer 1

3 rotations/sec, since the
(moment of inertia)x(rotation rate) product must stay the same. It is a measure of angular momentum.

Answer 2

3 rotations/sec, since the
(moment of inertia)x(rotation rate) product must stay the same. It is a measure of angular momentum.