5. The pumping unit is used to recover oil. When the walking beam ABC is horizontal, the force acting in the wireline at the well head is 250 lb. Determine the torque M which must be exerted by the motor in order to overcome this load. The horse-head C weighs 60 lb and has a center of gravity at Ge. The walking beam ABC has a weight of 130 lb and a center of gravity at Gs, and the counterweight has a weight of 200 lb and a center of gravity at Gw. The pitman, AD, is pin connected at its ends and has negligible weight.
5. The pumping unit is used to recover oil. When the walking beam ABC is horizontal, the force acting in the wireline at the well head is 250 lb. Determine the torque M which must be exerted by the motor in order to overcome this load. The horse-head C weighs 60 lb and has a center of gravity at Ge. The walking beam ABC has a weight of 130 lb and a center of gravity at Gs, and the counterweight has a weight of 200 lb and a center of gravity at Gw. The pitman, AD, is pin connected at its ends and has negligible weight.
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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Transcribed Image Text:5. The pumping unit is used to recover oil. When the walking beam ABC is horizontal, the force
acting in the wireline at the well head is 250 lb. Determine the torque M which must be
exerted by the motor in order to overcome this load. The horse-head C weighs 60 lb and
has a center of gravity at Gc. The walking beam ABC has a weight of 130 lb and a center
of gravity at Gs, and the counterweight has a weight of 200 lb and a center of gravity at
Gw. The pitman, AD, is pin connected at its ends and has negligible weight.
-5 ft
-6 ft
!GB
B
70°
20°
250 Ib
3 ft 2.5 ft
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