An ice skater starts spinning (without friction) at an angular speed of oo. as she pulls her arms and legs tightly against her body, her angular speed gradually increases to 30 (a) calculate the skater's final period of rotation (t). express your answer in terms of her initial period (t). show your working. (b) determine the skater's final moment of inertia (i). express your answer in terms of her initial moment of inertia (1). provide a reason to support your answer. (e) which one of the following statements is true about the skater? provide a reason to support your answer. a. both her angular momentum and her rotational kinetic energy increased. b. her angular momentum increased, but her rotational kinetic energy remained constant c. her angular momentum remained constant, but her rotational kinetic energy increased. d. both her angular momentum and her rotational kinetic energy remained constant.