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Unformatted text preview: ME 343 F09
Midterm 2
16 November 2009 Exam is closed book and closed notes, you are allowed a 1 page (2 sided) 8.5” X ll” note sheet. Remember that all vector answers need BOTH
magnitude and directionl Good luck Problem 1: (15 Points) Design a slider crank mechanism Wilh the following properties:
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A complete design will Speéﬁjall!%eqﬁii*ed lebgtbsfandéhte“ s‘if‘lve‘eﬂ at which the crank is to be driven.  . ‘s l éxl'blkj/ \‘WE \> \hw’ﬁ Ruling» . WQQM, Problem 2: (15 Points) Link 2, shown in the ﬁgure below, is rotating counterclockwise, at a speed of 309mm, determine the velocity of points A, and B. Given
[in 60°, and 3/3 50°. RVs, =‘= “N51
" “min—miighzrf: Problem 3: (20 Points) F 01“ the carton feeding mechanism shown below, in ﬁgure 3, the 3m {ix”M crank rotates clockwise with a cogstant anguiaj velocity of 350mm, ~ 3“; were; A6
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determme the lmear acceieratlon of the ram at the instant shown in the ﬁgure.
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‘ m ' “"2 J “W” " " W ‘ ‘ {1,6 M w {We '1?" g5?) :; @gjlm :— agik‘shgﬁmfggéf Problem 4 : (25 points) For the {:01le essor linkage shown below calculate the linear velocity
and linear acceleration of the piston at the instant shown, given that the 2m crank ES rotating clockwise at 125 RPM and accelerating at
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l l \Qc Wlml“ﬂ Problem 5: (25 points) For the power hacksaw Shown in the ﬁgure below the l.75in crank is
rotating at 80 RPM and accelerating at 50 rad/32, for the instant shown calculate the linear velocity and linear acceleration of the hacksaw
blade. ...
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 Fall '09
 varischetti

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