Gravity series

Me and mini me❤️

🧊 Hot water freezes faster than cold water!
This is called the Mpemba Effect, and scientists are still figuring out exactly why it happens.

"Objects fall at the same rate in vacuum, no matter their mass."

📘 Simple Explanation:
In the absence of air (vacuum), a feather and a stone fall at the same speed, because there’s no air resistance. Sir Isaac Newton’s law of gravity tells us that all objects accelerate at 9.8 m/s² near Earth, no matter how heavy or light.

⚡ Current Can Create Magnetism
👉 When electric current flows through a wire, it creates a magnetic field around it — just like a magnet!

🧲 This is the basic principle behind electromagnets, which are used in fans, speakers, doorbells, and even MRI machines.

💡 Example You Can Relate To:
Take a wire and connect it to a battery. Now place a compass near it. The compass needle will move — that’s because of the magnetic field created by the current in the wire!

You Weigh Less at the Equator Than at the Poles!
Due to Earth’s rotation, you actually weigh slightly less at the equator than you do at the poles.

Why?

The Earth is not a perfect sphere — it’s an oblate spheroid, meaning it bulges at the equator.

At the equator, you're farther from the Earth's center, so gravity is slightly weaker.

Also, due to the centrifugal force from Earth’s rotation, there’s an outward force acting against gravity — reducing your effective weight.

➡️ Difference in weight?
About 0.5% less at the equator. If you weigh 60 kg at the poles, you’d weigh about 59.7 kg at the equator.