In one of our class sessions, I sat on a rotating seat with heavy weights in each of my hand. (a) As I pulled the weights to my chest, did my

 In one of our class sessions, I sat on a rotating seat with heavy weights in each of my hand. (a) As I pulled the weights to my chest, did my rotational inertia increase, decrease or did not change? (b) Did my rotational speed (angular speed) change? Why? Explain your answer.