Midterm_2[08]

# Midterm_2[08] - MAE 101 Midterm Examination#2 Instructor...

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MAE 101 Midterm Examination #2 May 28, 2008 Instructor: Professor Gupta TA: Jason Citron DO ALL WORK ON THE EXAM ATTTACH ADDITIONAL SHEETS AS NEEDED WRITE YOUR NAME ON EVERY SHEET YOU USE BOX YOUR FINAL ANSWERS NOTE: ALL EQUATIONS OF EQUILIBRIUM MUST HAVE ASSOCIATED FREE BODY DIAGRAMS Problem 1 15 --- Problem 2 25 ---"--- Problem 3_2_5__ Problem 4_'2_5__ TOTAL (100) _\0_0__ NAME: SO\'v\-\im<s ID: _

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1: The shaft is supported by thrust bearings that subject it to an axial load of 800 N. The coefficients of kinetic friction between the shaft and the left and right bearings are 0.20 and 0.26, respectively. What couple is required to rotate the shaft at a constant rate? (25 points). " ' F (" 3 _ .:3)' ~J.lk· . ra 1i - i) _ to-;, ,. -- --, ~Jtk' , n ,'_ i) 'J •• 0COSCt ' r- -r~ , -,-, - Hmt: Some helpful formulae to use may mclude M= <:. ' 1 lor M= 3 . Lcl4- \?e,Q.d"J: 10:;' ,,' = 0 t:I. :: Y )A~, ::: 0. 'LO F :: <600 N _ ZPI< f (ro'"\$ -ri'3. ) N \-t-G - - " = -+ '3.cos~'<' \0'1-
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Midterm_2[08] - MAE 101 Midterm Examination#2 Instructor...

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