A student sits on a freely rotating stool holding two dumbbells, each of mass 2.92 kg (see figure below). When his arms are extended horizontall dumbbells are 1.05 m from the axis of rotation and the student rotates with an angular speed of 0.757 rad/s. The moment of inertia of the stude 2.63 kg - m² and is assumed to be constant. The student pulls the dumbbells inward horizontally to a position 0.293 m from the rotation axis (Fi Wi b (a) Find the new angular speed of the student. rad/s (b) Find the kinetic energy of the rotating system before and after he pulls the dumbbells inward. Kbefore Kafter J ] Activate Go to Settin

A student sits on a freely rotating stool holding two dumbbells, each of mass 2.92 kg (see figure below). When his arms are extended horizontall dumbbells are 1.05 m from the axis of rotation and the student rotates with an angular speed of 0.757 rad/s. The moment of inertia of the stude 2.63 kg - m² and is assumed to be constant. The student pulls the dumbbells inward horizontally to a position 0.293 m from the rotation axis (Fi Wi b (a) Find the new angular speed of the student. rad/s (b) Find the kinetic energy of the rotating system before and after he pulls the dumbbells inward. Kbefore Kafter J ] Activate Go to Settin