Homework $5-$ Attempt $1$

nternal Forces Developed in Structural Members

Learning Goal:

To design a structural member, it is necessary to know the

resultant forces and moments within the member to ensure

the material will be able to support the loading. The method

of sections is used to determine internal loadings. Consider

the cantilever beam shown in the image below: $($Figure $1)$

If the internal loadings acting on the beam at $B$ are to be

determined, we make an imaginary cut at section $a-a$

perpendicular to the axis of the beam and separate the beam

into two segments. The internal loadings at $B$ then become

igure

$4$ of $4$