Ordinarily, gravity and the normal force counterbalance each other. in other words:

In other words "they cancel each other out".

The normal power is the helping drive or force that is applied upon a thing that is in contact with another steady object. For instance, if a pen is resting upon a surface, the surface is applying an upward power upon the pen with a specific end goal to help the heaviness of the pen stay on that table.

where is the rest of the question. this isn't making sense. can you upload a picture of the question?