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bioe119-Fall1999-mt1-Keaveny-exam

# bioe119-Fall1999-mt1-Keaveny-exam - ME 176 Mid-Term Exam...

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ME 176 Mid-Term Exam, Fall 1999 Name: ______________________________ Wednesday, October 6, 9:30–11:00 AM , 1999. Please write all answers in the space provided. If you need additional space, write on the back sides. Indicate your answer as clearly as possible for each question. Write your name at the top of each page as indicated. _____________________________________________________________________________ _ 1. Statics (15 points) Using a graphical approach (vector force triangle), estimate the magnitude of the joint contact force at the shoulder for the static abduction exercise shown schematically here (to scale). The mass of the weight in the hand is 6 kg. Ignore the weight of the arm and assume that only one muscle group is active. State any additional assumptions necessary to complete your analysis. Page 1 of 9

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ME 176 Mid-Term Exam, Fall 1999 Name: ______________________________ 2. Dynamics and Gait (15 points) On the top a model of human walking, with the dashed line A–B showing the approximate trajectory of the center of mass of the body during gait, and the letters HS and TO denoting heel strike and toe-off, respectively. Assume that A–B is sinusoidal, with minimum values at HS and
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bioe119-Fall1999-mt1-Keaveny-exam - ME 176 Mid-Term Exam...

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