What is her new rotational velocity

Reference no: EM13342365

A student sitting on a frictionless rotating stool has rotational inertia 0.90kg?m2 about a vertical axis through her center of mass when her arms are tight to her chest. The stool rotates at 6.70rad/s and has negligible mass. The student extends her arms until her hands, each holding a 5.5kg mass, are 0.80m from the rotation axis.

Part A Ignoring her arm mass, what's her new rotational velocity?

Part B Repeat if each arm is modeled as a 0.80m long uniform rod of mass of 4.9kg and her total body mass is 61kg.

Reference no: EM13342365

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