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An excavator encounters a reaction force of 7600 lb from the ground, normal to line AC, as shown. The shaded structural members (Dipperstick (FH), Mainboom (ADK), bucket, and hydraulic cylinders) have a combined weight of 15000 lb and a horizontal mass center located midway between points C and G.

An excavator encounters a reaction force of 7600 lb from the ground, normal to line AC, as shown. The shaded structural members (Dipperstick (FH), Mainboom (ADK), bucket, and hydraulic cylinders) have a combined weight of 15000 lb and a horizontal mass center located midway between points C and G.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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1. An excavator encounters a reaction force of 7600 lb from the ground, normal to line AC, as shown. The shaded structural members (Dipperstick (FH), Mainboom (ADK), bucket, and hydraulic cylinders) have a combined weight of 15000 lb and a horizontal mass center located midway between points C and G. A OLUNU G 3 ft 6 in. 40° E Mainboom 3 ft 4 in. 39 ft F O K Dipperstick H Bucket 7600 lb C Questions: (a) Dismember the shaded structural members (with labeled points A-H) from the tractor and sketch a free-body diagram showing external and exposed internal forces. (b) Compute the force in the hydraulic cylinder strut BD and the pin reactions at A in the given position.
Transcribed Image Text:1. An excavator encounters a reaction force of 7600 lb from the ground, normal to line AC, as shown. The shaded structural members (Dipperstick (FH), Mainboom (ADK), bucket, and hydraulic cylinders) have a combined weight of 15000 lb and a horizontal mass center located midway between points C and G. A OLUNU G 3 ft 6 in. 40° E Mainboom 3 ft 4 in. 39 ft F O K Dipperstick H Bucket 7600 lb C Questions: (a) Dismember the shaded structural members (with labeled points A-H) from the tractor and sketch a free-body diagram showing external and exposed internal forces. (b) Compute the force in the hydraulic cylinder strut BD and the pin reactions at A in the given position.
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