1. An excavator encounters a reaction force of 7600 lb from the ground, normal toline AC, as shown. The shaded structural members (Dipperstick (FH), Mainboom(ADK), bucket, and hydraulic cylinders) have a combined weight of 15000 lb and ahorizontal mass center located midway between points C and G.ΑΠΟG3 ft 6 in.40°EMainboom3 ft 4 in.39 ftDipperstickHBucket7600 lbCANNALQuestions:(a) Dismember the shaded structural members (with labeled points A-H) from thetractor and sketch a free-body diagram showing external and exposed internalforces.(b) Compute the force in the hydraulic cylinder strut BD and the pin reactions atA in the given position.

Answered: Image /qna-images/answer/5a341942-4a6f-4c76-a2dc-b8925a56b642.jpg

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.

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 4.41P: The center of gravity of the 3000-lb car is at G. The car is parked on an incline with the parking...

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Question

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.
ΑΠΟ
G
3 ft 6 in.
40°
E
Mainboom
3 ft 4 in.
39 ft
Dipperstick
H
Bucket
7600 lb
C
ANNAL
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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