Once again, we have to step away from the pictorial impression and think of the 5 of Pentacles
elementally. The Five's are disruptive in general, and in Earth the effect is
strain of the kind that builds up right before an earthquake. So if the Ace of Cups is a big gush of emotion (whenever I look at the Thoth Ace I think of someone dropping a water balloon on a sidewalk
), the 5 of Pentacles "feeding it" (as a "friendly" influence) would give the Ace something constructive to "push against" or "shove off from" in a purposeful way. Rather than being soft-focused and "all over the place" emotionally, the Ace becomes determined and driven toward a concrete objective. If the Five shows a state of stressful impasse, the Ace delivers a stroke of enthusiasm, imagination and inspiration to "kick out the jams" (in that old rock & roll expression); it makes me think of the Sun breaking out from behind clouds.
I think it stalls a bit when it bumps up against the 6 of Wands. The Sixes represent a temporary state of equilibrium, but in the impatient, self-interested element of Fire it's more fitful and less centered than otherwise. I can see where Water interacting with its antagonistic opposite, Fire, can create a "drying up" of feelings as more selfish inclinations emerge. But, as I said earlier, the Ace has a bit more inherent "clout" than the Six (being closer to its elemental source), so maybe it won't fare so badly and will have enough "oomph" to win through. In the best sense, this could show emotions winning the tug-of-war with ego issues.