 Welcome back to Kids Fun Science. My name is Ken. Today's experiment is the physics of spins and figure skating. As always, adult supervision is required. What you need for this experiment is a lazy Susan which I have in the description where you can get it, apply wood, and screws. What I have here today, we're going to do this really cool experiment about the science behind ice skating and doing the spins. So what I'm using is a lazy Susan here. It's in the middle. In the description I'll show you where you can get it at. It's basically one of those things you put on your kitchen table and move the food around and stuff like that. But we're going to actually stand on it and show you the science behind these ice skating spins. Really cool. Look in the description for this and enjoy the video. To start off this experiment, you need to stand on your lazy Susan. Make sure you have plenty of space which you can see I don't. I have chairs right behind me. And then hold your arms out straight with two or five pound weights. I had five pounds. And then have someone push you in a circle to start you off with your angular momentum. Once I get going, I'm going to pull my arms into the middle of my chest. This will reduce the distance between the axis and the rotation in some of my mass, reducing my momentum of inertia. Since the angular momentum is conserved, my rotational velocity must increase to compensate. And when I wanted to stop, I just pulled my arms back out. The thing I found most difficult was actually keeping my balance as you start to spin around. And when you move the weights into your chest, you start to speed up very quick. This is slow motion here. And then when I put the weights back out, it slows down my momentum, which was really a weird feeling and very hard to control from falling off. I felt kind of like I didn't know where I was at and if I could hold on. I mean, ice skitters practice this for years and years. So here I go again. I'm going to get my push and hopefully pull my arms in the middle and keep my balance. And I cannot do it. Once you pull in, it starts going quick. Very last time. Go in, pull in, and off I go. So I'm going to bring in the youth and see if they can do it better. All right. So here we go. Ready to go. I'm going to get them going and he'll pull his arms in. He goes a lot quicker, but he falls off one more time showing in slow motion. When he pulls in his arms to his chest, he starts to spin a lot quicker than I do, but eventually falls off. I hope you enjoyed this video. Please remember to click thumbs up and to subscribe as we do a new video every day. And thanks for watching.