A 55.0-kg woman stands at the rim of a horizontal turntable having a moment of inertia of \(520 \, \text{kg} \cdot \text{m}^2\) and a radius of 2.00 m. The turntable is initially at rest and is free to rotate 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 m/s relative to the Earth.(a) In what direction does the turntable rotate?- \( \circ \) counterclockwise- \( \circ \) clockwiseWith what angular speed does the turntable rotate?\[ \text{rad/s} \](b) How much work does the woman do to set herself and the turntable into motion?\[ \text{J} \]Need Help?- Read It- Master It

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-55.0-kg woman stands at the rim of a horizontal turntable having a ertical axle through its center. The woman then starts walking aroun

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

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A 55.0-kg woman stands at the rim of a horizontal turntable having a moment of inertia of \(520 \, \text{kg} \cdot \text{m}^2\) and a radius of 2.00 m. The turntable is initially at rest and is free to rotate 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 m/s relative to the Earth.

(a) In what direction does the turntable rotate?
- \( \circ \) counterclockwise
- \( \circ \) clockwise

With what angular speed does the turntable rotate?
\[ \text{rad/s} \]

(b) How much work does the woman do to set herself and the turntable into motion?
\[ \text{J} \]

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