 Welcome back to Kids Fun Science. My name's Ken. Today's experiment is the water bottle toothpick and string center gravity experiment. What you need for this experiment is at least three toothpicks, probably a lot more string, a water bottle, and a little bit of patience. So you need to take your string and to make it into a loop and so the little loop at the end and then tie it together so it's another loop. The little loop has to go over the tip of the water bottle just like this very snug so when you hang it from the table that it will water bottle won't fall off. So here I am I'm picking up with my finger and therefore it's not falling off so you just have to make sure it's securely tight and once you have that we're ready to do the next step. Now you put a toothpick on the table and you can see it's holding the water bottle but when you release the toothpick it just falls and it just shoots the toothpick out. So you get this something heavy enough I have a one gallon milk on there to hold it down and then now the trick comes this took about 20 minutes you got to put the toothpick in the nylon string and make sure that you keep moving it up and down so it fits just right to the tip of the toothpick coming off the table to the toothpick on the bottom and you want to make sure that that is straight so right there it's not completely straight and it's a little too high there so it's a little bit frustrating it's going to take some patience here like I said it took me about 20 minutes and you kind of push make sure that's level and you push it into the nylon thread a little bit right when you got it just about right there it might be a little bit high you push it in so it can pry up on that toothpick and it'll take some time to get that in place and once you get it in place you'll see it arcs on the bottom toothpick as you're putting some pressure on there and now when we take off the gallon of milk tada it holds because we've changed the center of gravity so it's not hanging over the table but even with the table and therefore the toothpick on the table can support the weight even if you give it a little bit of a tap and it sways it's still going to be able to hold up so the key is see how it's very tricky you get that one tip of the toothpick on the other and balance on the other toothpick and you can see that I it took a little bit of time to get that so don't get frustrated on there I hope you enjoyed this video if you did remember to click thumbs up and to subscribe and thanks for watching okay that video seems really interesting oh and um that video too um thank you like on them at the same time and those two and the red subscribe button down below and um yeah thank you thank you bye those two videos too