A student is swinging a set of keys with a mass of 120g on a lanyard that is 18 inches long in a circular motion in a vertical plane. The motion causes the lanyard to exert a maximum of a 5lb force on the students hand. What is the speed of the keys when the student lets go?
A student is swinging a set of keys with a mass of 120g on a lanyard that is 18 inches long in a circular motion in a vertical plane. The motion causes the lanyard to exert a maximum of a 5lb force on the students hand. What is the speed of the keys when the student lets go?
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter8: Conservation Of Energy
Section: Chapter Questions
Problem 24PQ: A block is placed on top of a vertical spring, and the spring compresses. Figure P8.24 depicts a...
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A student is swinging a set of keys with a mass of 120g on a lanyard that is 18 inches long in a circular motion in a vertical plane. The motion causes the lanyard to exert a maximum of a 5lb force on the students hand. What is the speed of the keys when the student lets go?
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