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2. A vertical member is subjected to an axial impact by 100lb weight dropped from a height of 2 ft. The member is made

2. A vertical member is subjected to an axial impact by 100lb weight dropped from a height of 2 ft. The member is made of steel with Sy=45 ksi, E=30 X106 Neglect the effect of member mass and stress concentration. What must be the length of the member in order to avoid yielding if it has a diameter of a) 1 in, b) 1 "

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