Physics 39 Capacitors (22 of 37) Find the Force Needed to Push a Dielectric in a Charged Capacitor

In this video I will find the force needed to push a dielectric into a fully charged capacitor.

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[lailasmilgaine]

Great video! Thank you! However, I would like to ask you a question regarding your video on a force needed to push a dielectric between capacitor plates while it is still connected to battery. It was stated that you would have to apply some force in order to move dielectric between capacitor plates and energy stored on capacitor plates after dielectric is inserted would increase since more charge is drawn. But wouldn’t the capacitor try and draw more energy from the battery to compensate the force needed to place the dielectric between the capacitor plates. What I mean, wouldn’t the capacitor pull the dielectric in anyway, but would draw more energy from the battery just to compensate the amount of energy consumed when dielectric was pulled in.
Clarification on the question would be much appreciated!
Thank you in advance and Thank you for the amazing videos you make!
P.S. Video in the link below aroused my curiosity, showing that oil level is increasing without mechanical force being applied so that pretty much lead me to ask this question.

[deniz-gunay]

It is very interesting that diaelectric will get pulled in :)

[anishabenny]

Sir, how is it that it is being pulled in?

[eighthourlunch]

So, if I were to create a force diagram of the dielectric being sucked upward into the capacitor, I'd have gravity pulling in the negative y, and the acceleration from the capacitor in the positive? It seems like the upward acceleration would be a function of the height of the dielectric level in the capacitor, that is, that the higher the dielectric goes inside, the lower the upward force on it from the capacitor, until it reaches an equilibrium. Does that sound right?