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well, i still dotn understand , can you explain based on the question ?haruspex said:
The tensions in BC, BD act upward on the girder at C and D but downward on the junction B.werson tan said:
why they will act downward on the junction B.haruspex said:
Imagine yourself as junction B, i.e. you are holding the two wires BC and BD, and holding a third wire going up to some support above you. You alone are holding it all together. Are the wires BC and BD pulling you down or pushing you up?werson tan said:
yesharuspex said:
tats how the direction of tension it is ?werson tan said:
Yes which, down or upwerson tan said:
Tension is the force that pulls or stretches an object. It is important to determine its direction because it affects the stability and structural integrity of the object. Knowing the direction of tension is crucial in designing and constructing safe and sturdy structures.
The direction of tension can be determined by analyzing the forces acting on the object and identifying the direction of the force that is pulling or stretching the object. This can be done through mathematical calculations or physical experiments.
The direction of tension can be affected by various factors such as the shape and size of the object, the materials used, and the external forces acting on the object. The direction of tension can also change when the object is under different conditions, such as temperature or pressure.
Downward tension is more common because of gravity. Gravity pulls objects towards the center of the Earth, causing them to exert downward tension. Additionally, most structures are designed to withstand the weight of objects on top of them, which also creates downward tension.
Knowing the direction of tension is crucial in designing structures because it helps determine the type and amount of materials needed to withstand the forces acting on the structure. It also allows engineers to anticipate potential weak points and reinforce them accordingly, ensuring the safety and stability of the structure.
