by 
kimmhy020
ANSWERS: 1
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"Translational motion" is strictly any motion in which all parts of an object move in the same direction. In this question it simply means "sideways motion". The pre-edited question also asked how to strengthen a beam structure against translational stresses. The simplest answer to the second part is cross beams: diagonal beams whose tension or compression compensates for sideways forces. An example is the many crossed metal beams of an electricity transmission tower.
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