Answer
The magnitude of the force on the spheres from the right side of the container is $~~mg$
Work Step by Step
In part (b), we found that the magnitude of the force on the spheres from the left side of the container is $~~mg$
The force on the spheres from the right side of the container is equal in magnitude to the force on the spheres from the left side of the container.
Therefore, the magnitude of the force on the spheres from the right side of the container is $~~mg$