Problem 8: An ice skater is spinning at 6.4 rev/s and has a moment of inertia of 0.48 kg · m². Part (a) Calculate the angular momentum, in kilogram meters squared per second, of the ice skater spinning at 6.4 rev/s. Numeric : A numeric value is expected and not an expression. L1 = Part (b) He reduces his rate of rotation by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia (in kilogram meters squared) if his rate of rotation decreases to 0.75 rev/s. Numeric : A numeric value is expected and not an expression. I2 = Part (c) Suppose instead he keeps his arms in and allows friction of the ice to slow him to 3.75 rev/s. What is the magnitude of the average torque that was exerted, in N m, if this takes 19 s? Numeric : A numeric value is expected and not an expression. Tave =
Problem 8: An ice skater is spinning at 6.4 rev/s and has a moment of inertia of 0.48 kg · m². Part (a) Calculate the angular momentum, in kilogram meters squared per second, of the ice skater spinning at 6.4 rev/s. Numeric : A numeric value is expected and not an expression. L1 = Part (b) He reduces his rate of rotation by extending his arms and increasing his moment of inertia. Find the value of his moment of inertia (in kilogram meters squared) if his rate of rotation decreases to 0.75 rev/s. Numeric : A numeric value is expected and not an expression. I2 = Part (c) Suppose instead he keeps his arms in and allows friction of the ice to slow him to 3.75 rev/s. What is the magnitude of the average torque that was exerted, in N m, if this takes 19 s? Numeric : A numeric value is expected and not an expression. Tave =
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter13: Rotation Ii: A Conservation Approach
Section: Chapter Questions
Problem 56PQ
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