A student sits on a rotating stool holding two 2kg objects. When his arms are extended horizontally, the objects are 1m apart from the axis of rotation, and he rotates with angular speed of 0.66 rad/sec. The moment of inertia of the student plus the stool is 3kgm^2 and is assumed to be constant. The student then pulls the objects horizontally to a radius 0.35m from the rotation axis.
a) calculate the final angular speed of the student (answer in units of rad/s)
b)Calculate the change in kinetic energy of the system. (answer in units of J)
a) calculate the final angular speed of the student (answer in units of rad/s)
b)Calculate the change in kinetic energy of the system. (answer in units of J)