If F₁ = {100i 120j +75k} lb andF₂ = (-2001 - 250j +100k) lb,determine the resultant momentproduced by these forces aboutpoint O. Express the result as aCartesian vector.3 ft4 ft05 ft

Answered: F₁ = {1001 - 120j +75k} lb and…

F₁ = {1001 - 120j +75k} lb and 2=(-2001-250j +100k} lb. etermine the resultant moment roduced by these forces about oint O. Express the result as a Cartesian vector. 3 ft 4 ft

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Braced cuts

The braced cut is a method of providing lateral support to the soil in foundation trenches, to prevent the trenches from deformation by the caving in of soil and resisting it from moving laterally. During shallow excavation in firm soil, generally, slopes are provided to resist the caving in of soil. During shallow excavation in soft soil and deep excavation, the chances of caving in of soil increase. Hence, it becomes necessary to make a provision to resist the deformation of trenches due to caving in of soil. The braced cut is the method used for such conditions. The excavation using braced cuts is a bit uneconomical as compared to the traditional open-cut excavation method but provides better safety than the cut excavation method.

Question

If F₁ = {100i 120j +75k} lb and
F₂ = (-2001 - 250j +100k) lb,
determine the resultant moment
produced by these forces about
point O. Express the result as a
Cartesian vector.
3 ft
4 ft
0
5 ft

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