The forces vary depending on how fast you move it up. You might be thinking of energy not force, as in joules not newtons.
To elaborate, imagine you wanted you were playing air hockey, you have to hit the puck alot harder to move it fast than to move it slow even though both will reach the other side
So about the same eneegy it takes to keep a 6 watt lightbulb on for 19 minutes
Edit: oops i see you meant reply, thats a tough one that i cant really answer on the toilet. But using the formula work= F*D and some simplifying assumptions you could do it yourself