Aloha fellow forumdwellers, “Long” time reader, first time poster reporting for duty! Got a small question which I hope you peeps can help me understand (since I'm someone who wants to understand how things work, not just blindly copy it from a notebook). Gonna start my first year of college physics in 4 months, and I've done some reading pure out of interest, but I can't seem to find an answer to my problem: Why is “r” squared in Newton's Gravitation law (or Coulombs law for that matter)? I've been staring myself almost insane on the representation of 2 attracting particles, and can't find a logical answer to this! Can someone explain me why this is? With the representation of 2 attracting particles I mean the picture on Wikipedia under Newton's law of universal gravitation. Cheers, Kevin PS: sorry for my bad English, still working on it!