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Name_KensetA Getler : AE 2220 QUIZ 3 SPRING 2012 HONOR CODE FOR THIS QUIZ: This quiz is closed book, closed notes, and no calculator. By signing the statement below, you are agreeing that you have not received or given any help on this exam, either by sharing or discussing the contents of the exam during the exam period or by having access to any form of written or oral aid during the exam. No writing or modification of your papers in any form is allowed before or after the time for all students to complete the exam. You also agree to abide by any written or verbal instruction provided to the class. By signing this statement, you acknowledge that the violation of this statement constitutes academic dishonesty and will result in a zero for the quiz and/or be reported to the GIT Administration for disciplinary action. | have abided by the Honor Code as delineated above: Freel Bekker Only work on the front of this sheet will be graded, No exceptions. Circle/box your answer. Leave all square roots and fractions in their simplest form for full credit. Show your work for full credit. Consider the bar which is sliding down the curved surface. At the position shown in the figure, the bar has an angular velocity of 2 t/s and an angular acceleration of 3 1/s*, both in the clockwise direction. a) Sketch and identify the instantaneous center of zero velocity for the bar /on the figure to the left. Show or describe below how you found the instantaneous center of zero velocity. ye Te veleerty ot Cond Ais foget fhe iB cue (erecle A aclu C2 @ @ ecele center A b) Using the process of the instantaneous center of zero velocity, calculate the velocity (magnitude and direction) of point B in Cartesian coordinates. Explain in one sentence how you determined the direction of the velocity of point B.. nae orn “es © lle wee (2 «> eR f= atte STIS BY HA aie Wee 5? COGN) 4 The Areetion ames frm te Tha lege, of he SKY tingle CHP 39) (2A) ¢) Verify the velocity of point B using the velocity relation for two points on the same rigid body. ‘ Wye Vy + whe x(ag) = 26% +B (4 = Vz wrt PRD? Var ol AF 7 d} Compute the angular acceleration of point B in both Cartesian and the natural (normal/tangential) coordinate systems. = _ a 2m Ag? Ay + EX - OTe) A We Fat S28) + aR x (10432) - (4) (49 735) “ : / Aw S244 sq tesoh 4124-44-16 I2f = Caaale ht (Sz dete) ay = [oi 52h Yh AB | A 4 Aye y+ ok «Fas oi* (Tp) = D+ 3h - W03) = -3t- seh 
