3) A student sits on a rotating stool holding two 3.0 kg objects. When his arms are extended horizontally, the objects a

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3 A Student Sits On A Rotating Stool Holding Two 3 0 Kg Objects When His Arms Are Extended Horizontally The Objects A 1 (88.27 KiB) Viewed 44 times

3) A student sits on a rotating stool holding two 3.0 kg objects. When his arms are extended horizontally, the objects are 1.0m from the axis of rotation, and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus stool is 3.0 kg m’ and is assumed to be constant. The student then pulls th objects horizontally to 0.40 m from the rotation axis. (a) Find the new angular speed of the student. (b) Find the kinetic energy of the student system before the objects are pulled in. (c) Find the kinetic energy of the student system after the objects are pulled in. (d) Determine the work done (to get credit, do your calculations starting from the basic equations USING LETTERS, show all the steps of your calculation and only plug in the numerical data at the end)