DENJIRO: Today, I’ve made a toy with two wheels. It may look unbalanced with the front being too heavy, but let me try pushing it with my hand.
GIRL: It’s running without falling over!
DENJIRO: The disc on the front wheel’s shaft was spinning. Now let me try running the toy without spinning the disc. It falls over right away. So why was it able to run without falling over when the disc was spinning? If you want to ride a bicycle without falling over, you need to turn the handle in the direction the bike tilts to. The front wheel also turns in the direction the bike tilts to. If the toy tilts to one side when the disc is not spinning, nothing happens. But if the toy tilts when the disc is spinning… the front wheel turns in the direction the toy tilts to. When a spinning object tilts, a force that causes it to turn in the same direction arises. This is called the gyroscopic effect. With the toy, the gyroscopic effect caused the wheel to turn in the direction the toy tilted to. It tried to maintain its balance, and that’s why it kept running without falling over.
Now, let me show you another toy that uses the gyroscopic effect. I’ve attached two fidget spinners to both sides of a CD. As is, the toy cannot stand on its own. Let’s see what happens when I spin the two fidget spinners in the same direction.
BOY: The CD is standing on its own!
DENJIRO: Due to the gyroscopic effect, when the CD tilted, it turned in the same direction to maintain balance. That’s why the CD doesn’t fall over. By the way, the CD doesn’t stand up if the fidget spinners are spun in opposite directions. In this case, the effects of the spin are canceled out, causing the CD to be in the same state as when the spinners are not spinning.
NARRATOR: This toy that uses the gyroscopic effect is easy to make, so try it at home!
DENJIRO: I hope energy will bring you all happiness. Our magic word is "Happy Energy!”
Негізгі бет Ойын-сауық A Gyroscope Toy That Doesn’t Fall Over! / Mr. Denjiro’s Happy Energy!
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