The linkage in Fig. 3-10 has O,A = 8mm, AB = 19. 3mm, AC = 13. 3mm, and offset = 3. 8mm. The crank angle in the position shown is 34. 3° and LBAC = 38. 6°. Find w,, v4, va, vc 3.9 %3D for the position shown for w, = 15rad/s in the direction shown. (Choose two methods) 1) Use the velocity difference graphical method. 2) Use the instantaneous center graphical method. 3) Use the analytical method. @2 3 B offset O2

The linkage in Fig. 3-10 has O,A = 8mm, AB = 19. 3mm, AC = 13. 3mm, and offset = 3. 8mm. The crank angle in the position shown is 34. 3° and LBAC = 38. 6°. Find w,, v4, va, vc 3.9 %3D for the position shown for w, = 15rad/s in the direction shown. (Choose two methods) 1) Use the velocity difference graphical method. 2) Use the instantaneous center graphical method. 3) Use the analytical method. @2 3 B offset O2

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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theta O = 55 The link length and value of O2 for some four bar linkage are defined below, (drive link =4.2 cm , coupler link =5.9 cm , follower link = 5.9 cm, fixed link= 6.85 cm 1. draw the linkage to scale and graphically find all possible solution (both open and cross) for 03 and O4 2. If w = 2 rad /s (CCW) find the angular velocity for bar 3 and 4 3.if a= 5 rad/s? (Ccw) find the normal and tangential acceleration for link 3 and 4
The linkage in the following figure has O2A = 0.8, AB = 1.93, AC = 1.33, and offset = 0.38 in. The crank angle in the position shown is 34.3° and angle BAC = 38.6°. Find a 3, A4, Ag and Ac for the position shown for 02 = 15 rad/s, a2= 10 rad/sec² in direction shown. 5. a) Using the acceleration difference graphical method b) Using an analytical method. A 3 B 02 4 1
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Oestion-1: An elliptical trammel is a double slider-crank mechanism used for drawing ellipses as shown in figure (a) below. Position vectors for various linkages are drawn as shown in figure (b). Where: R2: represents position vector for a Slider which can slide along x-axis only R4: represents position vector for a Slider which can slide along y-axis only R3 represents position vector for a crank (Take R3 = 10mm, 03 = 45°, V3 = 10mm/sec) Rix: This is aligned with x-axis and represents fixed position of slider (R4) from ground RIY: This is aligned with Y-axis and represents fixed position of slider (R2) from ground Take: R13= 20mm, Rịy=40mm. Assume crank is rotating with constant velocity Note: all angles are measured counterclockwise from x-axis. a) Formulate the vector loop, position, velocity and acceleration equations b) Simplify the equations by plugging in respective angles and solve to find R2, R4, linear velocities of both sliders and angular acceleration of crank. c) Identify…
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