Suppose a simple setup where a free load (red) is supported by an inclined plane (pink) and a block at the end of the inclined plane (blue) touching the load as shown:
Is the force normal to the pink plane exerted by the red load smaller than that of the case where the load doesn't make contact with the blue block (assuming the load can somehow stick to the plane)? I just wonder how it'd affect the reading on a scale if it was positioned on the pink plane. My take is that the normal force would be the same (thus, the scale readings as well) regardless of the blue block because, since the force exerted normal to the plane is $m \times g \times cos(\theta)$, $m$, $g$ and $\theta$ are variables independent of the blue block. Is that correct?