With the 315-lb cylindrical part P in its grip, the robotic arm pivots about O through the range -45° 0 ≤ 45' with the angle at A locked at 120°. Determine and plot (as a function of 0) the moment at O due to the combined effects of the 315-lb part P, the 105-lb weight of member OA (mass center at G₁), and the 35-lb weight of member AB (mass center at G₂). The end grip is included as a part of member AB. The lengths L₁ and L2 are 2.3 ft and 1.6 ft, respectively. What is the maximum absolute value of Mo and at what value of 8 does this maximum occur? The moment is positive if counterclockwise, negative if clockwise. After you have the plot, answer the questions.

With the 315-lb cylindrical part P in its grip, the robotic arm pivots about O through the range -45° 0 ≤ 45' with the angle at A locked at 120°. Determine and plot (as a function of 0) the moment at O due to the combined effects of the 315-lb part P, the 105-lb weight of member OA (mass center at G₁), and the 35-lb weight of member AB (mass center at G₂). The end grip is included as a part of member AB. The lengths L₁ and L2 are 2.3 ft and 1.6 ft, respectively. What is the maximum absolute value of Mo and at what value of 8 does this maximum occur? The moment is positive if counterclockwise, negative if clockwise. After you have the plot, answer the questions.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter4: Coplanar Equilibrium Analysis

Section: Chapter Questions

Problem 4.11P: The figure is a model for member CDE of the frame described in Prob. 4.10. Draw the FBD of the...

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Question

With the 315-lb cylindrical part P in its grip, the robotic arm pivots about O through the range-45 ≤ 0 ≤ 45° with the angle at A
locked at 120°. Determine and plot (as a function of 0) the moment at O due to the combined effects of the 315-lb part P, the 105-lb
weight of member OA (mass center at G₁), and the 35-lb weight of member AB (mass center at G₂). The end grip is included as a part of
member AB. The lengths L₁ and L2 are 2.3 ft and 1.6 ft, respectively. What is the maximum absolute value of Mo and at what value of 8
does this maximum occur? The moment is positive if counterclockwise, negative if clockwise. After you have the plot, answer the
questions.
5
15/01
4
120 G₂
Questions:
When 8-35°, Mo= i
lb-ft
When 8 = -6°,
Mo=
lb-ft
When 8 = 19°, Mo=
lb-ft
2
i

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