I will explain what I have done and my observations.
I took this bottle and added water into it.
1st time , 25 percent , then 75 percent and then 100 percent of water was filled in the bottle. Yes , water did not fall at any of the times. I turned the bottle and the water did not drip or fall.
1st time , there was almost 75% air inside the bottle with 25% water.That 75 % air is exerting force on the water and the weight of water itself and then the atmospheric pressure from outside. Even when air was 0% and 25% water didn’t fall.
I am not getting why didn't the water fall.
It doesn’t happen if I fill a tub of water and then turn it upside down or fill my water bottle or something else which has a shape similar to it.
Please help me understand why it did not happen and how should we draw its FBD ?
u can also slowly rotate the bottle.The water still does not come out.
Now , Thank you all for your answers.I have attached this photo in which there is similar size bottle.From this water did drip , now how is that possible as well?It is almost similar.