When I am learning "Resultant of a general system of forces", I encountered one problem that, sometimes when I am replacing a system of forces with one resultant force, I always cannot counteract the moment thee forces generate. For example:
60*4=
For this question(shown in the following post below), knowing that the distance d=1.5m, determin the resultant of the loads acting on the beam shown. Specify the point of application of this resultant one the beam.
The magnitude of resultant force is -100+60-50=-90; The direction is pointing downwards.
For the moment generated by the forces, we took the most left point as our reference point, then total moment is about 100*1+50*1.5-60*4=-65KN*M(Clockwise direction)
But the resultant force can only produce counterclockwise moment as it is pointing downwards. So how should I solve this problem?
60*4=
For this question(shown in the following post below), knowing that the distance d=1.5m, determin the resultant of the loads acting on the beam shown. Specify the point of application of this resultant one the beam.
The magnitude of resultant force is -100+60-50=-90; The direction is pointing downwards.
For the moment generated by the forces, we took the most left point as our reference point, then total moment is about 100*1+50*1.5-60*4=-65KN*M(Clockwise direction)
But the resultant force can only produce counterclockwise moment as it is pointing downwards. So how should I solve this problem?
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