Assume all other forces on Logan are balanced. Which statement describes the forces on Logan?

 - The forces are unbalanced, so there is a net force on Logan.
 - The forces are balanced, so there is no net force on Logan.
To determine if there is a net force on Logan, look at the forces:
Earth's gravity is pulling Logan down with a force of 400 N.
The diving board is pushing Logan up with a force of 400 N.
The forces are in opposite directions, and the forces have the same magnitude: 400 N. This means that the forces are balanced, so there is no net force on Logan.