Evaluate the kinetic energy of the student

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Reference no: EM13565959

A student sits on a rotating stool holding two 3.0 kg objects. When his arms are extendedhorizontally, the objects are 1.0 m from the axis of rotation, andhe rotates with an angular speed of 0.75 rad/s. The moment ofinertia of the student plus stool is 3.0 kgm2 and isassumed to be constant. The student then pulls the objectshorizontally to 0.20 m from therotation axis.

(a) Find the new angular speed of thestudent.

rad/s

(b) Find the kinetic energy of the student before and after theobjects are pulled in.

before J

after J

Reference no: EM13565959

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