inertia of I; = 2.34 kg.m² with her arms extended and of Ir with her arms close to her body. If the ratio of the skater'sfinal kinetic energy to her initial kinetic energy is = 6.45,Suppose an ice skater is spinning at wi = 5.03 rad/s with her arms extended. She has a moment of5.Kia) what is her final angular velocity wf after she pulls inher arms?b) What is her rotational inertia Iț with her arms close toher body?WiWfAnswers: a) 32.44 rad/s; b) 0.363 kgm?Note: Moments of inertia are based on reasonableassumptions about a 60.0 kg skater

initial angular speed of skater (ωi) = 5.03 rad/secmoment of inertia (Ii) = 2.34 kg-m2ratio of final…

inertia of I; = 2.34 kg.m² with her arms extended and of Ir with her arms close to her body. If the ratio of the skater's KL = 6.45, %3D Suppose an ice skater is spinning at wi = 5.03 rad/s with her arms extended. She has a moment of 5. final kinetic energy to her initial kinetic energy is Ki a) what is her final angular velocity w, after she pulls in her arms? b) What is her rotational inertia Iț with her arms close to her body? Wi Wf Answers: a) 32.44 rad/s; b) 0.363 kgm? Note: Moments of inertia are based on reasonable assumptions about a 60.0 kg skater

inertia of I; = 2.34 kg.m² with her arms extended and of Ir with her arms close to her body. If the ratio of the skater's KL = 6.45, %3D Suppose an ice skater is spinning at wi = 5.03 rad/s with her arms extended. She has a moment of 5. final kinetic energy to her initial kinetic energy is Ki a) what is her final angular velocity w, after she pulls in her arms? b) What is her rotational inertia Iț with her arms close to her body? Wi Wf Answers: a) 32.44 rad/s; b) 0.363 kgm? Note: Moments of inertia are based on reasonable assumptions about a 60.0 kg skater

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

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

Question

inertia of I; = 2.34 kg.m² with her arms extended and of Ir with her arms close to her body. If the ratio of the skater's
final kinetic energy to her initial kinetic energy is = 6.45,
Suppose an ice skater is spinning at wi = 5.03 rad/s with her arms extended. She has a moment of
5.
Ki
a) what is her final angular velocity wf after she pulls in
her arms?
b) What is her rotational inertia Iț with her arms close to
her body?
Wi
Wf
Answers: a) 32.44 rad/s; b) 0.363 kgm?
Note: Moments of inertia are based on reasonable
assumptions about a 60.0 kg skater

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