Question

question 6
if we consider the forces to the left of the section, we can say that the vertical shear at any section of the beam is equal to.
o the reactions minus the loads to the left of the section.
o the reactions plus the loads to the left of the section.

Explanation:

In structural mechanics, when considering forces to the left of a beam - section, the vertical shear force at that section is calculated by taking the algebraic sum of the vertical reactions and the vertical loads acting to the left of the section. The reactions act in one direction and the loads act in the opposite direction. So, the vertical shear at any section of the beam (considering forces to the left of the section) is the reactions minus the loads to the left of the section.

Answer:

the reactions minus the loads to the left of the section.