Statics - I think I found a mistake in the solution manual - need confirmation

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Homework Help Overview

The discussion revolves around a statics problem involving a beam structure fixed at a point and supported by a cable, with specific forces applied. Participants are examining the calculations related to reaction forces and moments at the fixed point.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants are discussing the correctness of values provided in a solution manual, particularly questioning the reaction force and the moment at the fixed point. One participant suggests a modification to the applied force to align with the manual's answer.

Discussion Status

The discussion is ongoing, with participants actively engaging in verifying calculations and addressing potential errors in the original problem setup. There is acknowledgment of a mistake in transcription, but no consensus on the final calculations has been reached.

Contextual Notes

Participants are working under the assumption that the weight of the cable and structure can be ignored, and they are referencing specific values from a solution manual that may contain discrepancies.

Femme_physics
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Homework Statement



http://img860.imageshack.us/img860/6320/tthing.jpg

In the drawing is described a beam structure fixed at point C, and held by a cable BD to the floor. The beam is loaded by two concentrated forces, F1 and F2, as described in the drawing.

Given

F1 = 700 [N]
F2 = 400 [N]

If it's known that the cable tension equals 1250 [N], calculate:

A) The reaction force at C
B) The fixation moment Mc at point C.

Ignore weight of cable and structure. Measurements are in mm.

The Attempt at a Solution



http://img827.imageshack.us/img827/5323/hopesr.jpg

Manual says

Cx = 80.77
 
Last edited by a moderator:
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I think your answer would fit if you subtract 50 N from F2.

Would that work for you too? :wink:
 
*slaps forehead* I mis-copied the print to my solution, then!

Thanks for catching it up! :smile:
 
Femme_physics said:
*slaps forehead* I mis-copied the print to my solution, then!

Thanks for catching it up! :smile:

How is your forehead nowawadays?

Any bruises? Noticeable brain damage? :-p
 

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