Скачать или смотреть Pendulum Swing Demo

Have you ever seen someone stand in front of a swinging pendulum and wonder, “Is it really safe?” Well, let’s break it down with science!
A pendulum is simply a weight hanging from a fixed point, swinging back and forth under the influence of gravity. When you pull the pendulum back and release it, gravity pulls it downward, converting its potential energy into kinetic energy, which makes it swing. As it rises on the other side, that kinetic energy turns back into potential energy. This cycle repeats, creating the pendulum’s smooth swinging motion.

Now here’s the cool part: energy in the pendulum system is conserved, which means the pendulum can never swing higher than the point where it started. If you hold the pendulum right up to your nose and let it go—without pushing it—it will swing away from you and then come right back, but it will stop just short of your face. Why? Because it doesn’t have any extra energy to go higher than where it began!

Of course, if you push it, add extra energy, or move forward, that changes the system and could be dangerous. But when released carefully, the laws of physics guarantee the pendulum won’t hit you in the face. Pretty amazing, right?

Science is wherever you are!


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