Asked by Charlotte
A sagging floor is jacked up and a steel girder 10 ft long whose cross sectional area is 6in^2 is put underneath. When the jack is removed, a strain gauge shows that the girder has been compressed by 0.0080in. Find the weight the girder is supporting in lbs and tons.
Answers
Answered by
Damon
delta L/L = w /(E A)
.008/120 = w/(E*6)
w = 6 E * .008/120
.008/120 = w/(E*6)
w = 6 E * .008/120
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