A pinjointed fourbar linkage is shown in the figure below.• The link lengths are L, = 7.8 in., L2 = 2.9 in., L3 = 7.25 in. and L4 = 3.5 in.Using the current position, 82 =110°, the position analysis has determined that 04 = 209.21°.Currently, link 2 is traveling at 10 rad/s CWLeB.O, =0Figure 6.7 Four-har linkage acceleration analysisThe angular velocities of link 3 w3 and and link 4 wa are:Select one:a. W3 = 3.589 rad/s, wa = 4.81 rad/sO b. w3= -4.29 rad/s, w4 = -4.38 rad/sO c. W3 = -4.29 rad/s, wa = 4.81 rad/sd. w3 = 2.7 rad/s, wa- 3.428 rad/s

Angular velocity is the rate of change in angular position of the object and it is denoted by the…

A pinjointed fourbar linkage is shown in the figure below. • The link lengths are L, = 7.8 in., L2 = 2.9 in., L3 = 7.25 in. and L4= 3.5 in. • Using the current position, 82 -110°, the position analysis has determined that 04 = 209.21° • Currently, link 2 is traveling at 10 rad/s CW Figure 6.7 Four-har linkage acceleration analysis The angular velocities of link 3 w3 and and link 4 wa are:

A pinjointed fourbar linkage is shown in the figure below. • The link lengths are L, = 7.8 in., L2 = 2.9 in., L3 = 7.25 in. and L4= 3.5 in. • Using the current position, 82 -110°, the position analysis has determined that 04 = 209.21° • Currently, link 2 is traveling at 10 rad/s CW Figure 6.7 Four-har linkage acceleration analysis The angular velocities of link 3 w3 and and link 4 wa are:

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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A general pinjointed fourbar linkage is shown in the figure below. It has the followings The link lengths are L1 = 8.50 in., L2 = 3.00 in., L3 = 5.00 in. and L4 = 4.50 in. The values of 0, = 0, 02 = 60°, and 04 = 119°. The angular velocity of link2 w2 = 10 rad/s CCW. L4 L2 02= 60° @2 B. Ao O = 0° Figure 5.32 Problems 5.3 and 5.4 The angular velocities of link 3 w3 and and link 4 w4 are: Select one: O a. w3 5.29rad/s CW, w4 = 6.14 rad/s CW O b. w3 = 3.94 rad/s CCW, w4 = 4.8 rad/s CCW O c. W3 5.29 rad/s CW, w4 = 4.80 rad/s CCW O d. w3 = 3.94 rad/s CCW, W4 = 6.14 rad/s CCW
A pinjointed fourbar linkage is shown in the figure below. The link lengths are L1 = 7.8 in., L2 = 2.9 in., L3 = 7.25 in. and La = 3.5 in. Using the current position, 02 110°, the position analysis has determined that 0 = 209.21°. Currently, link 2 is traveling at 10 rad/s CW B. 8, =0 Figure 6.7 Four-bar linkage acceleration analysis The angular velocities of link 3 wz and and link 4 wa are: Select one: O a. w3 = -4.29 rad/s, wa = 4.81 rad/s O b. w3 = 2.7 rad/s, w4 = 3.428 rad/s O c. W3 = -4.29 rad/s, wa = -4.38 rad/s O d. w3 = 3.589 rad/s, wa = 4.81 rad/s %3! %3D
A general pinjointed fourbar linkage is shown in the figure below. It has the followings: The link lengths are L1 = 8.50 in., L2 = 3.00 in., L3 = 5.00 in. and L4 = 4.50 in. The values of e1 = 0, 02 = 60°, and 04 = 119°. The angular velocity of link2 w2 = 10 rad/s CCW. L4 2 = 60° Ao B. O, = 0° Figure 5.32 Problems 5.3 and 5.4 The angular velocities of link 3 wz and and link 4 wa are: Select one: O a. w3 = 5.29rad/s CW, w4 = 6.14 rad/s CW O b. w3 = 3.94 rad/s CCW, W4 = 4.8 rad/s CCW O c. W3 = 3.94 rad/s CCW, wa = 6.14 rad/s CCW %3D O d. w3 = 5.29 rad/s CW, w4 = 4.80 rad/s CCW %3D %3D
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 link length and value of O2 for some four bar linkages are defined below, (fixed link =12 cm, drive link =5 cm, coupler link = 10 cm, follower link= 8 cm) 1. draw the linkage to scale and graphically find all possible solution (both open and cross) for 03 and O4, analytical . 2. If w = 2 rad /s (CCW) find the angular velocity for bar 3 and 4 3.if a= 5 rad/s² (CCW) find the normal and tangential acceleration for link 3 and 4
A general pinjointed fourbar linkage is shown in the figure below. It has the followings: The link lengths are L1 = 8.50 in., L2 = 3.00 in., L3 = 5.00 in. and L4 = 4.50 in. The values of θ1 = 0, θ2 = 60°, and θ4 = 119°. The angular velocity of link2 ω2 = 10 rad/s CCW. The angular velocities of link 3 ω3 and and link 4 ω4 are: Select one: a. ω3 = 5.29 rad/s CW, ω4 = 4.80 rad/s CCW b. ω3 = 5.29rad/s CW, ω4 = 6.14 rad/s CW c. ω3 = 3.94 rad/s CCW, ω4 = 4.8 rad/s CCW d. ω3 = 3.94 rad/s CCW, ω4 = 6.14 rad/s CCW
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
A general inverted fourbar slider-crank linkage has links length: link 2 = a = 2, link 4 = c = 4, and link 1= d = 6 in. The input values are 02 = 60°, y = 90°. The linkage configuration and terminology are shown in figure below; note that this figure does not represent the real dimensions of the linkage We need to find the angular positions of link 4 (04), of link 3 (03) and the effective length of link 3 (b) for both open and crossed configurations. 03 Өд В 4 RB 02 02 1 02 04 Choose... For open configuration, the angle 04 measured form X axis CCW in degree = Choose... For open configuration, the angle 03 measured form X axis CCW in degree = Choose... + For open configuration, the absolute value of the effective length of link 3, b = Choose... For crossed configuration, the angle 04 measured form X axis CCW in degree = Choose... For crossed configuration, the angle 03 measured form X axis CCW in degree = Choose... For crossed configuration, the absolute value of the effective length of…
2) Block 4 slides in a slot in the fixed piece 1. Axis Q₂ of crank 2 is fixed on 1. Q₂₂A = 1 1/2 in., and AB = 4/1/2 Draw the mechanism, assuming limen- sions for 1, if desired, or use center lines only. Draw the four-bar linkage for this mechanism, properly rotate the linkage Q₂ ABQ400; Name each link, and show the finite and infinite cranks. Frind graphically the two extreme positions of 13, The axis of the pin by which link 3 is attached to the block 4.. Dimension the length of the stroke of B. Ans. 3& in. for scale 1:1
1. Find a combination of link lengths where motion of a point on output link is one quarter of a circle. 2. Find the value of all 0, 0, 0, and y in open and close configuration Read the value of link lengths and the input angle 8., then use the formulae given below to calculate the value of unknowns 03, 0, and y K₁ = = K₂= d K2 K3 = a²-b²+c²+d² 2ac A = cos 0₂ - K₁ - K₂ cos 0₂ + K3 B = -2 sin 0₂ C = K₁ (K₂ + 1) cos 02 + K3 -B± √B²-4AC 2A 0412 = 2tan-1 d K₁ = — K5 = c²d²a²-6² 2ab D = cos 0₂ - K₁ - K4 cos 0₂ + K5 E = -2 sin 0₂ FK₁+ (K₁ - 1) cos 02 +K5 0312 2 tan-1 (-E± -E± √E²4DF 2D Y = 04-03
Qestion-1: A slider-crank mechanism is shown in figure below. Position vectors for various linkages are drawn as shown in figure. Length of the rotating Link-1 (L1) is continuously changing due to the slider placed on it. Link-3 is fixed and aligned along y-axis. Note: All angles are measured anti-clockwise from x-axis and Link-1 is rotating with uniform velocity Take: L2 = 20mm, 02 =45°, L3= 30mm, o=10rad/sec, V2= 1000mm/s. a) Formulate the vector loop, position, velocity and acceleration equations b) Solve to find 01, L1, linear velocity of slider and angular acceleration of link-1. c) Identify if the mechanism can be declared as spatial or planar mechanism also identify total number of full and half joints.
Slide B travels along the center line XX'. Q2A = 18 cm, AB = 72 cm. 1. With the crank in the position shown, draw the four bar linkage. Name each link and show the finite and infinite cranks.2. Find the two extreme positions of block B. Express your answer in terms of the acute angle formed by crank Q2A with the horizontal axis (like the angle 45° in the figure)3. Determine the length of the stroke of B. Write your answer in two decimal places.