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ch4_7_student_notesF2010

# ch4_7_student_notesF2010 - EQUIVALENT FORCE-COUPLE SYSTEMS...

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EQUIVALENT FORCE-COUPLE SYSTEMS Today’s Objectives : 1) Determine the effect of moving a force. 2) Find an equivalent force-couple system for a system of forces and couples. In-Class Activities : Applications Equivalent Systems System reduction Questions and problems

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APPLICATIONS What is the resultant effect on the person’s hand when the force is applied in four different ways ?
APPLICATIONS (continued) Several forces and a couple moment are acting on this vertical section of an I-beam. Can you replace them with just one force and one couple moment at point O that will have the same external effect? If yes, how will you do that? | | ??

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AN EQUIVALENT SYSTEM (Section 4.7) When a number of forces and couple moments are acting on a body, it is easier to understand their overall effect on the body if they are combined into a single force and couple moment having the same external effect The two force and couple systems are called equivalent systems since they have the same external effect on the body.
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