An ice figure skater is doing a spin with her hands on bar bells weighing 10 pounds a piece, clutched directly to her center of gravity for the spin. She has started to spin at 120 rpm(12.57 rad/sec) and suddenly extends her hands with the bar bells straight out radially from her body. Her arms are 2.5 feet long, her lo=8 lb-ft²(before extension). How much did she increase her mass moment of inertia by after she extended her arms? Answer in Ibm-ft².
An ice figure skater is doing a spin with her hands on bar bells weighing 10 pounds a piece, clutched directly to her center of gravity for the spin. She has started to spin at 120 rpm(12.57 rad/sec) and suddenly extends her hands with the bar bells straight out radially from her body. Her arms are 2.5 feet long, her lo=8 lb-ft²(before extension). How much did she increase her mass moment of inertia by after she extended her arms? Answer in Ibm-ft².
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter11: Angular Momentum
Section: Chapter Questions
Problem 72P: An ice skater is preparing for a jump with turns and has his arms extended. His moment of inertia is...
Question
![An ice figure skater is doing a spin with her hands on bar bells weighing 10 pounds a piece, clutched
directly to her center of gravity for the spin. She has started to spin at 120 rpm(12.57 rad/sec) and
suddenly extends her hands with the bar bells straight out radially from her body. Her arms are 2.5
feet long, her lo=8 lb-ft²(before extension). How much did she increase her mass moment of inertia
by after she extended her arms? Answer in Ibm-ft².](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F658feec0-16d4-4a3c-a64d-8c2c3aa94e72%2F8f3f63ae-cff4-4b95-a2ae-800e7643caa7%2Fczdkfve_processed.png&w=3840&q=75)
Transcribed Image Text:An ice figure skater is doing a spin with her hands on bar bells weighing 10 pounds a piece, clutched
directly to her center of gravity for the spin. She has started to spin at 120 rpm(12.57 rad/sec) and
suddenly extends her hands with the bar bells straight out radially from her body. Her arms are 2.5
feet long, her lo=8 lb-ft²(before extension). How much did she increase her mass moment of inertia
by after she extended her arms? Answer in Ibm-ft².
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