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Unit-D Structures and forces grade 7

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Question
Answer
complementary forces   Two or more forces acting on a single object at the same time.  
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Dynamic load   moving or changing forces on a load  
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Tension   Force that stretches and pulls apart an object; like pulling on an elastic  
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Compression   force that acts to squeeze or push parts within an object together  
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suspension bridge   bridge having its roadway hung from large cables supported between tall towers.  
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structural stability   the ability of a structure to maintain its position even when its being acted on by forces.  
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aesthetics   the pleasing appearance or effect that an object has because of how it looks  
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performance requirements   condition a structure must have when it is built  
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Truss   framework of beams that form triangles  
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deformation   change of shape in a structure  
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center of gravity   imaginary point in an object where the downward force of gravity acts.  
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beam   flat structure supported at both ends.  
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shear   force that acts to push parts that are in contact with each other apart.  
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load   external force acting on an object  
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mass   amount of matter in an object  
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