With the 205-lb cylindrical part Pin 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 205-lb part P, the 145-lb weight of member OA (mass center at G₁), and the 50-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 3.0 ft and 2.1 ft, respectively. What is the maximum absolute value of Mo and at what value of 0 does this maximum occur? The moment is positive if counterclockwise, negative if clockwise. After you have the plot, answer the questions.
With the 205-lb cylindrical part Pin 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 205-lb part P, the 145-lb weight of member OA (mass center at G₁), and the 50-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 3.0 ft and 2.1 ft, respectively. What is the maximum absolute value of Mo and at what value of 0 does this maximum occur? The moment is positive if counterclockwise, negative if clockwise. After you have the plot, answer the questions.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Transcribed Image Text:With the 205-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 205-lb part P, the 145-lb
weight of member OA (mass center at G₁), and the 50-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 3.0 ft and 2.1 ft, respectively. What is the maximum absolute value of Mo and at what value of 0
does this maximum occur? The moment is positive if counterclockwise, negative if clockwise. After you have the plot, answer the
questions.
2
A
120 G
lb-ft
lb-ft
lb-ft
5/0
T
18
O
Questions:
When 8=-28°, Mo =
i
When 8 = -9°,
Mo=
1
When 8 = 32°.
Mo= 1
884.35
1143.49
1259.67
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