In the assembly shown, member AB is rigidly attached to the wall while an L bar is pinned to AB at E. Two forces P and Q are acting on the assembly as shown. Force P lies on the x-axis while force Q is applied at point D along a plane parallel to the yz plane. 1. Which of the following quantities is/are zero? (Choices: A. Moment of P about the x-axis ; B. Moment of P about the y-axis ; C. Moment of P about the z-axis)  2. Which of the following best approximates the moment of force Q about point A? 3. Which of the following best approximates the equivalent force-couple set at point A of the applied forces P and Q? Note: F is the resultant force and Cis the resultant couple 4. Considering the force diagram of member DE, which gives the complete set of reactions for the support at E? (Note difference of Force and couple reactions)

International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter1: Introduction To Statics
Section: Chapter Questions
Problem 1.12P: A differential equation encountered in the vibration of beams is d4ydx4=2D where x = distance...
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In the assembly shown, member AB is rigidly attached to the wall while an L bar is pinned to AB at E. Two forces P and Q are acting on the assembly as shown. Force P lies on the x-axis while force Q is applied at point D along a plane parallel to the yz plane.

1. Which of the following quantities is/are zero? (Choices: A. Moment of P about the x-axis ; B. Moment of P about the y-axis ; C. Moment of P about the z-axis) 
2. Which of the following best approximates the moment of force Q about point A?

3. Which of the following best approximates the equivalent force-couple set at point A of the applied forces P and Q? Note: F is the resultant force and Cis the resultant couple
4. Considering the force diagram of member DE, which gives the complete set of reactions for the support at E? (Note difference of Force and couple reactions)

 

Z
y
A
Q=150 N
20 mm
200 mm
35°
D
E
B
40 mm
60 mm
P = 80 N
120 mm
X
Transcribed Image Text:Z y A Q=150 N 20 mm 200 mm 35° D E B 40 mm 60 mm P = 80 N 120 mm X
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