Help ., Tue 10:57 PM ?? \'02 ura 4-6 cenam 2) 2018 A 62.0-kg woman stands at the
ID: 2032311 • Letter: H
Question
Help ., Tue 10:57 PM ?? '02 ura 4-6 cenam 2) 2018 A 62.0-kg woman stands at the western rim of a horizontal turntable having a moment of inertia of 53 kg·m2 and a radius of 2.00 m. The turntable s italy at rest and is free to o ate about a frictionless, vertical axle through its center. The woman then starts walking around the rim clockwise (as viewed from above the system) at a constant speed of 1.50 mus relative to the Earth. Consider woman-turntable system as motion begins (a) Is the mechanical energy of the system constant? Yes O No (b) Is the momentum of the system constant? Yes No rad/s magnitude 350Explanation / Answer
Final KE of system = (I1)w^2 /2 + m v^2/2
= ((530))(0.350^2)/2 + (62)(1.5^2)/2
= 102.2 J
Initial KE = 0
Work done = KEf - KEi = 102.2 J
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