Main Question or Discussion Point
Intuitively, if we have a beam nailed down to a box of some sort on one side and have the other side of the beam stick out (with an object on it), we would expect the beam to bend to an extent. However, when I tried to apply the knowledge of physics that I have, I had a bit of trouble explaining why it is so. Of course, the amount it bends depends on how much of the beam sticks out and how much mass there is on the beam sticking out. Is there a formal explanation for this or do we just assume it to be something intuitive?