{"id":60,"date":"2021-02-02T12:03:53","date_gmt":"2021-02-02T17:03:53","guid":{"rendered":"http:\/\/pressbooks.library.upei.ca\/statics\/?post_type=part&p=60"},"modified":"2025-07-17T12:16:42","modified_gmt":"2025-07-17T16:16:42","slug":"chapter-6-internal-forces","status":"publish","type":"part","link":"https:\/\/pressbooks.library.upei.ca\/statics\/part\/chapter-6-internal-forces\/","title":{"raw":"Chapter 6: Internal Forces","rendered":"Chapter 6: Internal Forces"},"content":{"raw":"In the last chapter we looked at the normal (axial) force running through beams joined into trusses by analyzing either the joints or a whole section of the truss.\r\n\r\nIn this chapter, we look at what happens along <\/em>a single <\/em>beam. We will look at three types of internal forces and moments. Note that when we say 'internal forces', we really mean 'internal forces and moments'. Inside a beam, we will calculate the normal and shear forces as well as the bending moment at any point in the beam.\r\n\r\nFor this chapter: the shear force and bending moment change throughout the beam because additional transverse forces are applied. However, the normal force usually stays the same, because it's uncommon to have applied axial forces along the beam.\r\n\r\nHere are the sections in this Chapter:\r\n