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Q&A

Comments on Why the water drop by a stick through bottle hole slow down?

Post

Why the water drop by a stick through bottle hole slow down? [closed]

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Closed as unclear by ArtOfCode‭ on Jun 12, 2023 at 19:20

This question cannot be answered in its current form, because critical information is missing.

This question was closed; new answers can no longer be added. Users with the reopen privilege may vote to reopen this question if it has been improved or closed incorrectly.

Question

I was wondering what force make drop slow down? Does every time a drop push toothpick back into bottle? And of course how to solve it.

Struct

This is a bottle be pierced by a wooden toothpick, made for continually drop water onto plant. The toothpick not connect to bottle, so no pressure make them "rigid".

Water height doesn't matter as explain below. 69 wooden toothpicks result 7.4g. Measure that water is 14cm height, toothpick is 1.072g.

Phenomenon

The water drop interval continually slow down, worth note that even add water into bottle(to increase fluid pressure) won't speed it up(OR speed up obviously, I didn't measure it).

To plot the measure(manually count, mistake count include) drop(counts) by time(10*milliseconds) in Octave:

drop = 1:1:100
TIME=[99, 192, 301, 417, 544, 696, 859, 1032, 1224, 1415, 1636, 1870, 2114, 2348, 2593, 2837, 3085, 3334, 3584, 3836, 4094, 4367, 4635, 4908, 5280, 5457, 5697, 6014, 6298, 6590, 6880, 7163, 7459, 7755, 8026, 8298, 8570, 8846, 9117, 9390, 9670, 9949, 10229, 10509, 10792, 11070, 11354, 11654, 11965, 12278, 12595, 12912, 13228, 13557, 13873, 14193, 14519, 14846, 15172, 15499, 15828, 16154, 16487, 16810, 17148, 17475, 17805, 18140, 18394, 18814, 19156, 19495, 19833, 20164, 20494, 20826, 21163, 21499, 21838, 22183, 22517, 22865, 23201, 23542, 23897, 24259, 24630, 24986, 25350, 25722, 26093, 26453, 26815, 27179, 27561, 27905, 28268, 28631, 28997, 29370]
plot(TIME(drop), drop)
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1 comment thread

Way too confusing (1 comment)
Way too confusing
Olin Lathrop‭ wrote over 1 year ago

I can't make any sense of your question. The poor English, to the point of causing confusion, doesn't help. Does every time a drop push toothpick back into bottle? Drop from where? Your diagram shows no drops. So this toothpick can move? How is it held? The diagram shows the toothpick overlapping the water reservoir, but then you say " toothpick not connect to bottle". Huh? What?

First try thinking about the problem carefully and logically. Explain the setup, explain what you observe, then explain what is unexpected. Then get someone who knows English to write the question. As it is now, this question needs to be closed.

Skipping 1 deleted comment.