47. the beam is supported by two rods ab and cd that have cross-sectional areas of 12mm^2 and 8mm^2, respectively. determine the position d of the 6-kn load so that the average normal stress in each rod is the same.

Let the beam is of length L

Now the stress on both the end is same

now we can say that torque on the beam due to two forces must be zero

also we know that stress at both ends are same

Now from two equations we have

solving above equation we have

so the load is placed at distance 0.4L from the end of 12 mm^2 area

no

sodium is solid at rt