In case of change of position by the spring scale sand is the original, and then make the beam is slide in the horizontal level. The value read from the spring scale to change how it?
In cases where the position of the sandbag. The scale in the same spring. Then the beam is stationary in level. The readings from spring scales will change or not.
In the case of change of position of sandbags. The spring balance in place. Then the beams still in horizontal. The value read from the spring balance will change or not?