It seems strange to call gravity weak. When you fall down, gravity feels powerful. But gravity is actually the weakest of the four fundamental forces in nature, by a colossal margin. Electromagnetism is roughly 10^36 times stronger than gravity. (That’s a 1 followed by 36 zeros.)
Look at any kitchen magnet. A small magnet weighing a few grams easily lifts a paperclip off the ground - overcoming the gravitational pull of an entire planet weighing 6 trillion trillion kilograms. The magnet’s electromagnetic force is just stronger than Earth’s gravitational force at that scale.
So why does gravity dominate our lives? Because of scale. Gravity always attracts and never repels, and it adds up across enormous masses. The Earth’s gravity is the combined pull of every atom in the planet, all stacked up. At the scale of planets, stars, and galaxies, gravity is the most important force. At the scale of a kitchen magnet, it’s almost nothing. Gravity is the bully of big things and the underdog of small things.
