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Which fundamental force is the weakest on everyday scales?
Quick Answer
Gravity is the weakest fundamental force on everyday scales. Yet because mass is always positive and accumulates, it shapes planets, stars, and galaxies.
The Full Story
At the scale of atoms and particles, gravity is by far the weakest of the fundamental forces. Two protons, for example, repel each other electrically far more strongly than they attract each other gravitationally. Still, gravity’s long range and always-attractive nature allow it to dominate when large amounts of matter are involved. That is why it controls the motion of planets and stars despite being so feeble locally.
Key Facts
1.Gravity is vastly weaker than electromagnetism at particle scales
2.Its force falls off with distance but never fully disappears
3.It dominates large-scale structure because masses add together
YouTube Angle
Suggested video title for this topic:
"Why the weakest force rules the cosmos"
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