(Jon of the Clue Crew shows himself on the monitor, swiveling around in a chair with dumbbells in his hands, extending and contracting his arms.)  When I draw my arms inward, my angular velocity increases because my angular mass decreases; the product of those two quantities is called angular this
[DOC] [TLE] Page 1 PES 1110 Fall 2013, Spendier Lecture 33/Page 1 Today ... [PAR] the total angular momentum of a system cannot change... 1.