{"id":590,"date":"2026-03-12T15:25:35","date_gmt":"2026-03-12T13:25:35","guid":{"rendered":"https:\/\/maths4u.gr\/?p=590"},"modified":"2026-03-12T15:47:26","modified_gmt":"2026-03-12T13:47:26","slug":"grav_const","status":"publish","type":"post","link":"https:\/\/maths4u.gr\/index.php\/2026\/03\/12\/grav_const\/","title":{"rendered":"\u03a0\u03b1\u03b3\u03ba\u03cc\u03c3\u03bc\u03b9\u03b1 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ac \u0392\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2"},"content":{"rendered":"<p>\u039c\u03b5\u03c4\u03b1\u03be\u03cd \u03b4\u03cd\u03bf \u03c3\u03c9\u03bc\u03ac\u03c4\u03c9\u03bd \u03bc\u03ac\u03b6\u03b1\u03c2 \\(m_1\\) \u03ba\u03b1\u03b9 \\(m_2\\) \u03c0\u03bf\u03c5 \u03b1\u03c0\u03ad\u03c7\u03bf\u03c5\u03bd \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2 \u03bc\u03b9\u03b1\u03bd \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 \\(r,\\) \u03c5\u03c6\u03af\u03c3\u03c4\u03b1\u03c4\u03b1\u03b9 \u03c0\u03ac\u03bd\u03c4\u03b1 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\u03bc\u03b9\u03b1 \u03b1\u03bd\u03c4\u03af\u03b4\u03c1\u03b1\u03c3\u03b7. \u0394\u03cd\u03bf \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2 \u03af\u03c3\u03b5\u03c2 \u03bc\u03bf\u03bd\u03bf\u03bc\u03b5\u03c4\u03c1\u03b9\u03ba\u03ac \u03bc\u03b1 \u03b1\u03bd\u03c4\u03af\u03b8\u03b5\u03c4\u03b7\u03c2 \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7\u03c2 \u03b4\u03b9\u03b1\u03bd\u03c5\u03c3\u03bc\u03b1\u03c4\u03b9\u03ba\u03ac.<br \/>\n\u03a4\u03bf \\(G\\) \u03b4\u03b5\u03bd \u03ad\u03c7\u03b5\u03b9 \u03ba\u03b1\u03bc\u03bc\u03b9\u03ac \u03c3\u03c7\u03ad\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03bf \\(g\\) \u03c0\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03b5\u03bd\u03cc\u03c2 \u03c3\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u03c0\u03bf\u03c5 \u03b2\u03c1\u03af\u03c3\u03ba\u03b5\u03c4\u03b1\u03b9 \u03c3\u03b5 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\u03b3\u03b5\u03b3\u03bf\u03bd\u03cc\u03c2 \u03ad\u03c7\u03b5\u03b9 \u03c7\u03c1\u03b7\u03c3\u03b9\u03bc\u03bf\u03c0\u03bf\u03b9\u03b7\u03b8\u03b5\u03af \u03b1\u03c0\u03cc \u03bf\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf\u03c5\u03c2 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03b1\u03c1\u03bd\u03b7\u03b8\u03bf\u03cd\u03bd \u03c4\u03b7\u03bd \u03cd\u03c0\u03b1\u03c1\u03be\u03b7 \u03b1\u03c3\u03c0\u03af\u03b4\u03c9\u03bd \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u039c\u03b5\u03c4\u03b1\u03be\u03cd \u03b4\u03cd\u03bf \u03c3\u03c9\u03bc\u03ac\u03c4\u03c9\u03bd \u03bc\u03ac\u03b6\u03b1\u03c2 \\(m_1\\) \u03ba\u03b1\u03b9 \\(m_2\\) \u03c0\u03bf\u03c5 \u03b1\u03c0\u03ad\u03c7\u03bf\u03c5\u03bd \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2 \u03bc\u03b9\u03b1\u03bd \u03b1\u03c0\u03cc\u03c3\u03c4\u03b1\u03c3\u03b7 \\(r,\\) \u03c5\u03c6\u03af\u03c3\u03c4\u03b1\u03c4\u03b1\u03b9 \u03c0\u03ac\u03bd\u03c4\u03b1 \u03c3\u03c4\u03b7\u03bd \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03c4\u03c9\u03bd \u03b4\u03cd\u03bf \u03b1\u03c5\u03c4\u03ce\u03bd \u03c3\u03c9\u03bc\u03ac\u03c4\u03c9\u03bd \u03bc\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03bc\u03b5 \u03bc\u03ad\u03b3\u03b5\u03b8\u03bf\u03c2 \\[F=G \\dfrac{m_1 m_2}{r^2}\\] \u03cc\u03c0\u03bf\u03c5 \\(G\\) \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03b1 \u03c0\u03b1\u03b3\u03ba\u03cc\u03c3\u03bc\u03b9\u03b1 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ac \u03c0\u03bf\u03c5 \u03ad\u03c7\u03b5\u03b9 \u03c4\u03b7\u03bd \u03af\u03b4\u03b9\u03b1 \u03c4\u03b9\u03bc\u03ae \u03b3\u03b9\u03b1 \u03ba\u03ac\u03b8\u03b5 \u03b6\u03b5\u03cd\u03b3\u03bf\u03c2 \u03c3\u03c9\u03bc\u03ac\u03c4\u03c9\u03bd. \u0395\u03af\u03bd\u03b1\u03b9 \u03bf \u03c0\u03b5\u03c1\u03b9\u03b2\u03cc\u03b7\u03c4\u03bf\u03c2 \u03bd\u03cc\u03bc\u03bf\u03c2 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 \u03c4\u03bf\u03c5 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