,yes exactly. I completely comprehend what you are saying. But the case that I showed here, the force is applied (or in other words, taken from the hole of a solid body) on one end of the line body, so shouldn't the other end of the same line body have the same value of shear force? Thats not what I see in the shear force graph that I shared. Btw, no other connection was present or external force was applied on that line body other than the mentioned.