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12_12_Torque_Review

# 12_12_Torque_Review - math f T,Yo-Yo A Yo-Yo is at rest on...

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12/12 Review 2 Presentation “Torque and the Yo-Yo” 2 Final Exam Tuesday 12/18, 8-10 am, Wit 116 150 total points but weighted as two regular 100 point exams 2 Review Guide on web 2 Peer Guides this week? 2 Be sure to turn in your last lab!!!

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Draw FBD Apply 2nd law for torque and force. x, y and axis W E,Yo-Yo N T,Yo-Yo T Y T S,Yo-Yo T X Adjust arrow lengths to be consistent with the
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Unformatted text preview: math f T,Yo-Yo A Yo-Yo is at rest on a table even though a string applies a tension force. The inner radius is r and the outer is 2r. F net.X F net.Y τ net.CM T X = f T Y + N = W rT = 2rf 2r τ = F ⊥ r T = 2f = 2f Can we find θ ? θ cos θ = f/2f = 1 / 2 θ = Arcos 1 / 2 = 60° r...
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12_12_Torque_Review - math f T,Yo-Yo A Yo-Yo is at rest on...

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