What is internal force?, Changes or moves, Comes from inside, External force, What is external force?, Comes from outside, A Triangle, Pushing, Internal force, Wind, Pushing, External force, Comes from inside, A roof on a house, Bending or tearing, Pushing, Internal force, Changes or moves, TENSION, Comes from outside, Does not change, Pulling, COMPRESSION, Pushing, Does not change, External force, Changes or moves, TORSION, External force, A Triangle, Twisting, Changes or moves, SHEAR, Does not change, Pushing, Bending or tearing, Static load, Does not change, Pulling, Changes or moves, Dynamic load, Changes or moves, Twisting, The strongest shape, A Triangle, Pushing, Comes from outside, TRUSS מסגרת תומכת, Twisting, External force, BEAM קורה, External force, Bending or tearing, ARCH קשת/שער, A Triangle, Comes from outside, COLUMNS עמודים, Changes or moves, Internal force

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