Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 6th Edition
Rotational Motion
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8-1: Angular Quantities
8-2 and 8-3: Constant Angular Acceleration; Rolling
8-4: Torque
8-5 and 8-6: Rotational Dynamics
8-7: Rotational Kinetic Energy
8-8: Angular Momentum
8-9: Angular Quantities as Vectors

Problem 15
2.8×104rev2.8 \times 10^4 \textrm{rev}
Giancoli 6th Edition, Chapter 8, Problem 15 solution video poster

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By pbundt67 on Sun, 12/4/2011 - 8:45 PM

this answer does not match the back of the book....please change

By Mr. Dychko on Mon, 7/9/2012 - 11:27 PM

Hi nelson.cynthia,

Thank you very much for posting your comment. You're absolutely right that the answer is times 10 to the 4, not times 10 to the 8. The quick answer has been updated, and the video, which is correct up until the final answer, will be updated later when I get a chance.

Good luck with your studies, and thank you again!

By nelson.cynthia on Mon, 7/9/2012 - 11:14 PM

If you plug (15000/2) (3.6667) into your calculator you get the book's answer.

By LukeOG on Tue, 10/30/2012 - 9:57 PM

I am confused on why you would use the AVERAGE angular velocity rather than just the final. I cannot find this formula in the book.

By Mr. Dychko on Sun, 12/2/2012 - 5:24 AM

This video has been updated!

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