If the woman's weight is 120 lbs and the barbell's total weight is 70 lbs: A.) What is the scale read in pounds when the barbell is up over head? B.) What does the scale read when the weightlifter, after standing, moves the barbells up with an acceleration of 9 ft/s? C.) What does the scale read when the weightlifter is initially squatting on the scale?

Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter5: The Laws Of Motion
Section: Chapter Questions
Problem 5.13CQ: A weight lifter stands on a bathroom scale. He pumps a barbell up and down. What happens to the...
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If the woman's weight is 120 lbs and the barbell's total weight is 70 lbs: A.) What is the scale read in pounds when the barbell is up over head? B.) What does the scale read when the weightlifter, after standing, moves the barbells up with an acceleration of 9 ft/s? C.) What does the scale read when the weightlifter is initially squatting on the scale?

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