21. A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 70 cm and is wrapped around the top at a place where its radius is 69.9 cm. The thickness of the string is negligible. The top is initially at rest. Someone pulls the free end of the string, thereby unwinding it and giving the top an angular acceleration of +10 rad/s^2. What is the final angular velocity of the top when the string is completely unwound? Note: Express your answer in whole numbers. No unit is required for the final answer.

College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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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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Please show your work. Thank you! 21. A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. The string has a length of 70 cm and is wrapped around the top at a place where its radius is 69.9 cm. The thickness of the string is negligible. The top is initially at rest. Someone pulls the free end of the string, thereby unwinding it and giving the top an angular acceleration of +10 rad/s^2. What is the final angular velocity of the top when the string is completely unwound? Note: Express your answer in whole numbers. No unit is required for the final answer.
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