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A figure skater stands on one spot on the ice (assumed frictionless) and spins around with her arms extended. When she pulls in her arms and lowers her upper body, she reduces her rotational moment of inertia, and her speed increases. Assume that the vertical component of her angular momentum is constant. Compared to her initial rotational kinetic energy, her rotational kinetic energy after she has pulled in her arms must be O larger O Not enough information is given to decide the same O smaller

A figure skater stands on one spot on the ice (assumed frictionless) and spins around with her arms extended. When she pulls in her arms and lowers her upper body, she reduces her rotational moment of inertia, and her speed increases. Assume that the vertical component of her angular momentum is constant. Compared to her initial rotational kinetic energy, her rotational kinetic energy after she has pulled in her arms must be O larger O Not enough information is given to decide the same O smaller

College Physics
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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A figure skater stands on one spot on the ice (assumed frictionless) and spins around with her arms extended. When she pulls in her arms and lowers her upper body, she reduces her rotational moment of inertia, and her speed increases. Assume that the vertical component of her angular momentum is constant. Compared to her initial rotational kinetic energy, her rotational kinetic energy after she has pulled in her arms must be O larger O Not enough information is given to decide the same smaller
Transcribed Image Text:A figure skater stands on one spot on the ice (assumed frictionless) and spins around with her arms extended. When she pulls in her arms and lowers her upper body, she reduces her rotational moment of inertia, and her speed increases. Assume that the vertical component of her angular momentum is constant. Compared to her initial rotational kinetic energy, her rotational kinetic energy after she has pulled in her arms must be O larger O Not enough information is given to decide the same smaller
1 Consider an ice skater gliding on ice holding a bag of sand that is leaking straight down with respect to the moving skater. As a result of the leaking sand, the speed of the skater increases does not change decreases O Not enough information is given to decide
Transcribed Image Text:1 Consider an ice skater gliding on ice holding a bag of sand that is leaking straight down with respect to the moving skater. As a result of the leaking sand, the speed of the skater increases does not change decreases O Not enough information is given to decide
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