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Gravitational energy

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done by the gravitational force to bring the mass from a chosen reference point (often an "infinite distance" from the mass generating the field) to some other point in the field, which is equal to the change in the
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towards each other. Gravitational potential energy increases when two objects are brought further apart and is converted to kinetic energy as they are allowed to fall towards each other.
728: 635:, so that it is zero when the objects are infinitely far apart. The gravitational potential energy is the potential energy an object has because it is within a gravitational field. 1638: 1003: 489: 1600: 184: 1739: 1699: 1664: 1272: 208: 1292: 1086: 1066: 1046: 1026: 770: 750: 676: 656: 601: 484: 339: 319: 299: 97: 790: 1239:{\displaystyle {\begin{aligned}\Delta U&={\frac {GMm}{R}}-{\frac {GMm}{R+h}}\\&={\frac {GMm}{R}}\left(1-{\frac {1}{1+h/R}}\right).\end{aligned}}} 102: 1300: 348:
Close to the Earth's surface, the gravitational field is approximately constant, and the gravitational potential energy of an object reduces to
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gravitational energy is extremely complex, and there is no single agreed upon definition of the concept. It is sometimes modelled via the
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and gravity is a natural consequence of Newton's First Law. Mass tells spacetime how to bend, and spacetime tells mass how to move.
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are inappropriate in general relativity, but the divergence of the combined matter plus gravitational energy pseudotensor is a
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to the Landau–Lifshitz pseudotensor results in a combined matter plus gravitational energy pseudotensor that has a vanishing
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at the surface (instead of at infinity), the familiar expression for gravitational potential energy emerges:
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in all frames—ensuring the conservation law. Some people object to this derivation on the grounds that
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For two pairwise interacting point particles, the gravitational potential energy
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is the work done by the gravitational force in bringing the masses together:
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To get the total work done by the gravitational force in bringing point mass
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Newton's Gravity: An Introductory Guide to the Mechanics of the Universe
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The Inflationary Universe: The Quest for a New Theory of Cosmic Origins
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For a demonstration of the negativity of gravitational energy, see
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that allows retention for the energy–momentum conservation laws of
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is constant, then this expression can be simplified using the
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is moving near the surface of a much larger object with mass
155:{\displaystyle U=W_{g}={\textbf {F}}_{g}\cdot {\textbf {r}},} 24: 2502: 2435: 2418: 2086: 859: 620: 51: 1352:{\displaystyle {\frac {1}{1+h/R}}\approx 1-{\frac {h}{R}}} 1969: 792:, the force is integrated with respect to displacement: 631:
requires that this gravitational field energy is always
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The University of Texas at Austin. 1718:A 2 dimensional depiction of curved 1633:{\displaystyle \Delta U\approx mgh.} 54:object has due to its position in a 2913: 2798:World energy supply and consumption 1927:Fitzpatrick, Richard (2006-02-02). 998:{\displaystyle U=-{\frac {GMm}{R}}} 545: 525: 495: 443: 417: 400: 379: 369: 253: 171: 144: 128: 13: 1853:, Appendix A—Gravitational Energy. 1803: 1609: 1492: 1447: 1370: 1099: 924: 884: 810: 14: 2972: 2912: 2900: 2888: 2877: 2876: 1929:"Gravitational potential energy" 1814:"Gravitational Potential Energy" 752:from infinity to final distance 607:above a chosen reference level. 1954:The Classical Theory of Fields 1939: 1920: 1886: 1863:MacDougal, Douglas W. (2012). 1856: 1831: 1722:("world lines"). According to 1558:As the gravitational field is 959:Gravitational Potential Energy 921: 603:is the height of the object's 562: 538: 529: 449: 437: 423: 411: 406: 394: 384: 364: 259: 247: 190:between the two particles and 74: 44:gravitational potential energy 1: 2956:Tensors in general relativity 1818:hyperphysics.phy-astr.gsu.edu 1796: 1068:from the center) to a height 1950:Evgeny Mikhailovich Lifshitz 1776:Gravitational binding energy 1740:Landau–Lifshitz pseudotensor 7: 1769: 680:Newton's law of gravitation 10: 2977: 1999: 1956:, (1951), Pergamon Press, 1901:Cambridge University Press 1710:Mass in general relativity 1707: 1595:{\displaystyle g=GM/R^{2}} 658:, and another point mass, 179:{\textstyle {\textbf {r}}} 2872: 2846: 2722: 2602:Fossil fuel power station 2570: 2483: 2389: 2264:Electric potential energy 2229: 2209:Thermodynamic temperature 2189:Thermodynamic free energy 2184:Thermodynamic equilibrium 2030: 2007: 1746:. Addition of the matter 2673:Concentrated solar power 16:Type of potential energy 2214:Volume (thermodynamics) 2194:Thermodynamic potential 2097:Mass–energy equivalence 1791:Positive energy theorem 1781:Gravitational potential 625:gravitational potential 67:of the objects as they 2169:Quantum thermodynamics 2159:Laws of thermodynamics 2040:Conservation of energy 1893:Tsokos, K. A. (2010). 1845:(Random House, 1997), 1731: 1695: 1694:{\displaystyle U=mgh.} 1660: 1634: 1596: 1552: 1353: 1296:binomial approximation 1288: 1268: 1240: 1082: 1062: 1042: 1022: 999: 949: 898: 786: 766: 746: 724: 672: 652: 629:Conservation of energy 597: 573: 486:is the object's mass, 480: 460: 343:gravitational constant 335: 315: 295: 273: 204: 180: 156: 93: 36: 2286:Interatomic potential 2077:Energy transformation 1946:Lev Davidovich Landau 1933:farside.ph.utexas.edu 1717: 1696: 1661: 1635: 1597: 1553: 1354: 1289: 1269: 1241: 1088:above the surface is 1083: 1063: 1043: 1023: 1000: 950: 899: 787: 767: 747: 725: 673: 653: 598: 574: 481: 461: 336: 316: 296: 274: 205: 181: 157: 94: 22: 2734:Efficient energy use 2707:Airborne wind energy 2685:Solar thermal energy 2592:Electricity delivery 2204:Thermodynamic system 2149:Irreversible process 1899:(revised ed.). 1748:stress–energy tensor 1670: 1644: 1606: 1562: 1363: 1301: 1278: 1250: 1092: 1072: 1052: 1032: 1012: 965: 910: 796: 776: 756: 736: 686: 662: 642: 587: 490: 470: 352: 325: 305: 285: 220: 194: 166: 103: 83: 40:Gravitational energy 2756:Energy conservation 2678:Photovoltaic system 2651:Nuclear power plant 2336:Quantum fluctuation 2199:Thermodynamic state 2174:Thermal equilibrium 1916:Extract of page 143 1744:classical mechanics 1659:{\displaystyle U=0} 1267:{\displaystyle h/R} 893: 819: 617:classical mechanics 611:Newtonian mechanics 560: 203:{\textstyle \cdot } 188:displacement vector 56:gravitational field 29:gravitational field 2793:Sustainable energy 2771:Energy development 2761:Energy consumption 2597:Energy engineering 1882:Extract of page 10 1736:general relativity 1732: 1724:general relativity 1704:General relativity 1691: 1656: 1630: 1602:, this reduces to 1592: 1548: 1546: 1349: 1284: 1264: 1236: 1234: 1078: 1058: 1038: 1018: 995: 945: 928: 894: 857: 805: 782: 762: 742: 720: 668: 648: 593: 569: 542: 476: 456: 331: 311: 291: 269: 200: 176: 152: 89: 37: 2951:Conservation laws 2928: 2927: 2695:Solar power tower 2341:Quantum potential 2179:Thermal reservoir 2082:Energy transition 1910:978-0-521-13821-5 1876:978-1-4614-5444-1 1532: 1486: 1431: 1399: 1347: 1328: 1287:{\displaystyle g} 1222: 1185: 1157: 1128: 1081:{\displaystyle h} 1061:{\displaystyle R} 1041:{\displaystyle M} 1021:{\displaystyle m} 993: 937: 913: 877: 843: 765:{\displaystyle R} 745:{\displaystyle m} 718: 671:{\displaystyle m} 651:{\displaystyle M} 596:{\displaystyle h} 567: 547: 532: 527: 497: 479:{\displaystyle m} 445: 419: 402: 381: 371: 334:{\displaystyle G} 314:{\displaystyle m} 294:{\displaystyle M} 264: 255: 173: 146: 130: 92:{\displaystyle U} 2968: 2916: 2915: 2904: 2892: 2891: 2880: 2879: 2854:Carbon footprint 2788:Renewable energy 2629:Hydroelectricity 2619:Geothermal power 2062:Energy condition 1994: 1987: 1980: 1971: 1970: 1964: 1943: 1937: 1936: 1924: 1918: 1914: 1890: 1884: 1880: 1860: 1854: 1835: 1829: 1828: 1826: 1824: 1810: 1726:, mass distorts 1700: 1698: 1697: 1692: 1665: 1663: 1662: 1657: 1639: 1637: 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191: 170: 169: 167: 164: 163: 143: 142: 133: 127: 126: 125: 116: 112: 104: 101: 100: 84: 81: 80: 77: 60:mechanical work 17: 12: 11: 5: 2974: 2964: 2963: 2958: 2953: 2948: 2943: 2926: 2925: 2923: 2922: 2910: 2898: 2886: 2873: 2870: 2869: 2867: 2866: 2861: 2859:Jevons paradox 2856: 2850: 2848: 2844: 2843: 2841: 2840: 2835: 2830: 2825: 2820: 2815: 2810: 2805: 2800: 2795: 2790: 2785: 2783:Energy storage 2780: 2775: 2774: 2773: 2763: 2758: 2753: 2752: 2751: 2746: 2741: 2730: 2728: 2720: 2719: 2717: 2716: 2715: 2714: 2709: 2699: 2698: 2697: 2692: 2682: 2681: 2680: 2675: 2665: 2660: 2659: 2658: 2653: 2643: 2642: 2641: 2636: 2631: 2621: 2616: 2615: 2614: 2609: 2599: 2594: 2589: 2587:Electric power 2584: 2578: 2576: 2568: 2567: 2565: 2564: 2559: 2554: 2549: 2548: 2547: 2537: 2532: 2527: 2522: 2517: 2516: 2515: 2510: 2505: 2495: 2489: 2487: 2485:Primary energy 2481: 2480: 2478: 2477: 2472: 2467: 2462: 2457: 2456: 2455: 2445: 2444: 2443: 2433: 2432: 2431: 2426: 2416: 2411: 2406: 2401: 2395: 2393: 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376: 366: 363: 360: 357: 330: 310: 290: 268: 261: 249: 243: 240: 237: 231: 228: 225: 212:scalar product 199: 151: 141: 136: 124: 119: 115: 111: 108: 88: 76: 73: 33:kinetic energy 15: 9: 6: 4: 3: 2: 2973: 2962: 2959: 2957: 2954: 2952: 2949: 2947: 2944: 2942: 2939: 2938: 2936: 2921: 2920: 2911: 2909: 2908: 2903: 2899: 2897: 2896: 2887: 2885: 2884: 2875: 2874: 2871: 2865: 2862: 2860: 2857: 2855: 2852: 2851: 2849: 2845: 2839: 2838:United States 2836: 2834: 2833:South America 2831: 2829: 2826: 2824: 2821: 2819: 2816: 2814: 2811: 2809: 2806: 2804: 2801: 2799: 2796: 2794: 2791: 2789: 2786: 2784: 2781: 2779: 2776: 2772: 2769: 2768: 2767: 2766:Energy policy 2764: 2762: 2759: 2757: 2754: 2750: 2747: 2745: 2742: 2740: 2737: 2736: 2735: 2732: 2731: 2729: 2727: 2721: 2713: 2710: 2708: 2705: 2704: 2703: 2700: 2696: 2693: 2691: 2690:Solar furnace 2688: 2687: 2686: 2683: 2679: 2676: 2674: 2671: 2670: 2669: 2666: 2664: 2661: 2657: 2654: 2652: 2649: 2648: 2647: 2646:Nuclear power 2644: 2640: 2637: 2635: 2632: 2630: 2627: 2626: 2625: 2622: 2620: 2617: 2613: 2610: 2608: 2605: 2604: 2603: 2600: 2598: 2595: 2593: 2590: 2588: 2585: 2583: 2580: 2579: 2577: 2573: 2572:Energy system 2569: 2563: 2560: 2558: 2555: 2553: 2550: 2546: 2543: 2542: 2541: 2538: 2536: 2533: 2531: 2528: 2526: 2525:Gravitational 2523: 2521: 2518: 2514: 2511: 2509: 2506: 2504: 2501: 2500: 2499: 2496: 2494: 2491: 2490: 2488: 2486: 2482: 2476: 2473: 2471: 2468: 2466: 2463: 2461: 2458: 2454: 2453:Hydrogen fuel 2451: 2450: 2449: 2446: 2442: 2439: 2438: 2437: 2434: 2430: 2427: 2425: 2422: 2421: 2420: 2417: 2415: 2412: 2410: 2407: 2405: 2402: 2400: 2397: 2396: 2394: 2392: 2388: 2382: 2379: 2377: 2374: 2372: 2369: 2367: 2364: 2362: 2359: 2357: 2354: 2352: 2349: 2347: 2344: 2342: 2339: 2337: 2334: 2332: 2329: 2327: 2324: 2322: 2319: 2317: 2314: 2312: 2309: 2307: 2304: 2302: 2299: 2297: 2294: 2292: 2289: 2287: 2284: 2280: 2277: 2276: 2275: 2274:Gravitational 2272: 2270: 2267: 2265: 2262: 2260: 2257: 2255: 2252: 2250: 2247: 2243: 2240: 2239: 2238: 2235: 2234: 2232: 2228: 2220: 2217: 2215: 2212: 2210: 2207: 2205: 2202: 2200: 2197: 2195: 2192: 2190: 2187: 2185: 2182: 2180: 2177: 2175: 2172: 2170: 2167: 2165: 2162: 2160: 2157: 2155: 2152: 2150: 2147: 2145: 2144:Heat transfer 2142: 2140: 2139:Heat capacity 2137: 2135: 2132: 2130: 2127: 2125: 2122: 2120: 2117: 2115: 2112: 2111: 2110: 2107: 2105: 2102: 2098: 2095: 2093: 2092:Negative mass 2090: 2089: 2088: 2085: 2083: 2080: 2078: 2075: 2073: 2072:Energy system 2070: 2068: 2065: 2063: 2060: 2056: 2053: 2052: 2051: 2048: 2046: 2043: 2041: 2038: 2037: 2035: 2029: 2023: 2020: 2018: 2015: 2013: 2010: 2009: 2006: 2002: 1995: 1990: 1988: 1983: 1981: 1976: 1975: 1972: 1963: 1962:7-5062-4256-7 1959: 1955: 1951: 1947: 1942: 1934: 1930: 1923: 1917: 1912: 1906: 1902: 1898: 1897: 1889: 1883: 1878: 1872: 1868: 1867: 1859: 1852: 1851:0-224-04448-6 1848: 1844: 1840: 1834: 1819: 1815: 1809: 1807: 1802: 1792: 1789: 1787: 1784: 1782: 1779: 1777: 1774: 1773: 1767: 1765: 1761: 1760:pseudotensors 1757: 1753: 1749: 1745: 1741: 1737: 1729: 1725: 1721: 1716: 1711: 1701: 1688: 1685: 1682: 1679: 1676: 1673: 1653: 1650: 1647: 1627: 1624: 1621: 1618: 1615: 1612: 1587: 1583: 1578: 1574: 1571: 1568: 1565: 1541: 1538: 1534: 1527: 1523: 1518: 1515: 1509: 1505: 1502: 1500: 1495: 1481: 1477: 1472: 1469: 1466: 1463: 1457: 1455: 1450: 1439: 1434: 1428: 1425: 1420: 1417: 1413: 1409: 1406: 1402: 1396: 1392: 1389: 1386: 1380: 1378: 1373: 1344: 1341: 1336: 1333: 1330: 1324: 1320: 1316: 1313: 1310: 1306: 1297: 1281: 1261: 1257: 1253: 1229: 1225: 1218: 1214: 1210: 1207: 1204: 1200: 1195: 1192: 1188: 1182: 1178: 1175: 1172: 1166: 1164: 1153: 1150: 1147: 1142: 1139: 1136: 1130: 1125: 1121: 1118: 1115: 1109: 1107: 1102: 1075: 1055: 1035: 1015: 1005: 990: 986: 983: 980: 974: 971: 968: 960: 956: 942: 939: 934: 931: 918: 904: 889: 879: 874: 870: 867: 864: 854: 851: 848: 845: 838: 834: 829: 826: 823: 815: 806: 802: 799: 779: 759: 739: 730: 713: 709: 704: 701: 698: 692: 689: 681: 665: 645: 636: 634: 630: 626: 622: 618: 608: 606: 590: 582: 556: 551: 515: 511: 507: 500: 473: 453: 433: 430: 427: 390: 387: 374: 361: 358: 355: 346: 344: 328: 308: 288: 279: 266: 241: 238: 235: 229: 226: 223: 215: 213: 197: 189: 149: 139: 134: 122: 117: 113: 109: 106: 86: 72: 70: 66: 61: 57: 53: 49: 45: 41: 34: 30: 26: 21: 2917: 2905: 2893: 2881: 2663:Oil refinery 2607:Cogeneration 2540:Nuclear fuel 2524: 2346:Quintessence 2273: 2134:Free entropy 2067:Energy level 2031:Fundamental 1953: 1941: 1932: 1922: 1895: 1888: 1865: 1858: 1842: 1833: 1821:. Retrieved 1817: 1733: 1007: 961: 958: 905: 731: 637: 614: 347: 280: 216: 210:denotes the 78: 58:. It is the 43: 39: 38: 2919:WikiProject 2739:Agriculture 2668:Solar power 2634:Tidal power 2508:Natural gas 2498:Fossil fuel 2441:Latent heat 2409:Electricity 75:Formulation 2961:Potentials 2935:Categories 2702:Wind power 2624:Hydropower 2575:components 2530:Hydropower 2520:Geothermal 2470:Sound wave 2381:Zero-point 2311:Mechanical 2296:Ionization 2269:Electrical 2164:Negentropy 2045:Energetics 1823:10 January 1797:References 1756:divergence 2813:Australia 2749:Transport 2744:Computing 2712:Wind farm 2639:Wave farm 2513:Petroleum 2493:Bioenergy 2465:Radiation 2404:Capacitor 2326:Potential 1839:Alan Guth 1728:spacetime 1720:geodesics 1616:≈ 1610:Δ 1503:≈ 1493:Δ 1458:≈ 1448:Δ 1421:− 1410:− 1381:≈ 1371:Δ 1337:− 1331:≈ 1196:− 1131:− 1100:Δ 975:− 925:∞ 922:→ 885:∞ 855:− 811:∞ 807:∫ 552:⊕ 530:^ 516:⊕ 375:⋅ 230:− 198:⋅ 140:⋅ 2883:Category 2448:Hydrogen 2414:Enthalpy 2316:Negative 2306:Magnetic 2291:Internal 2249:Chemical 2114:Enthalpy 2033:concepts 1770:See also 906:Because 633:negative 2946:Gravity 2895:Commons 2723:Use and 2582:Biomass 2552:Radiant 2399:Battery 2371:Thermal 2366:Surface 2351:Radiant 2321:Phantom 2301:Kinetic 2279:Binding 2259:Elastic 2242:Nuclear 2237:Binding 2124:Entropy 2022:Outline 2012:History 1640:Taking 579:is the 341:is the 186:is the 52:massive 46:is the 2907:Portal 2828:Mexico 2823:Europe 2818:Canada 2803:Africa 2726:supply 2535:Marine 2424:Fossil 2376:Vacuum 2129:Exergy 2050:Energy 2001:Energy 1960:  1948:& 1907:  1873:  1849:  1764:tensor 621:masses 583:, and 466:where 281:where 162:where 2847:Misc. 2557:Solar 2361:Sound 2230:Types 2104:Power 2055:Units 2017:Index 25:Earth 2808:Asia 2562:Wind 2503:Coal 2475:Work 2436:Heat 2419:Fuel 2356:Rest 2254:Dark 2219:Work 2087:Mass 1958:ISBN 1905:ISBN 1871:ISBN 1847:ISBN 1825:2017 301:and 69:fall 2429:Oil 1734:In 1359:to 1246:If 915:lim 615:In 42:or 27:'s 2937:: 1952:, 1931:. 1816:. 1805:^ 1766:. 682:: 627:. 345:. 50:a 1993:e 1986:t 1979:v 1913:. 1879:. 1841:, 1827:. 1754:- 1752:4 1689:. 1686:h 1683:g 1680:m 1677:= 1674:U 1654:0 1651:= 1648:U 1628:. 1625:h 1622:g 1619:m 1613:U 1588:2 1584:R 1579:/ 1575:M 1572:G 1569:= 1566:g 1542:. 1539:h 1535:) 1528:2 1524:R 1519:M 1516:G 1510:( 1506:m 1496:U 1482:2 1478:R 1473:h 1470:m 1467:M 1464:G 1451:U 1440:] 1435:) 1429:R 1426:h 1418:1 1414:( 1407:1 1403:[ 1397:R 1393:m 1390:M 1387:G 1374:U 1345:R 1342:h 1334:1 1325:R 1321:/ 1317:h 1314:+ 1311:1 1307:1 1282:g 1262:R 1258:/ 1254:h 1230:. 1226:) 1219:R 1215:/ 1211:h 1208:+ 1205:1 1201:1 1193:1 1189:( 1183:R 1179:m 1176:M 1173:G 1167:= 1154:h 1151:+ 1148:R 1143:m 1140:M 1137:G 1126:R 1122:m 1119:M 1116:G 1110:= 1103:U 1076:h 1056:R 1036:M 1016:m 991:R 987:m 984:M 981:G 972:= 969:U 943:0 940:= 935:r 932:1 919:r 890:R 880:| 875:r 871:m 868:M 865:G 852:= 849:r 846:d 839:2 835:r 830:m 827:M 824:G 816:R 803:= 800:W 780:M 760:R 740:m 714:2 710:r 705:m 702:M 699:G 693:= 690:F 666:m 646:M 591:h 563:| 557:2 546:r 539:| 526:r 512:M 508:G 501:= 496:g 474:m 454:, 450:| 444:g 438:| 434:h 431:m 428:= 424:| 418:r 412:| 407:| 401:g 395:| 391:m 388:= 385:) 380:r 370:g 365:( 362:m 359:= 356:U 329:G 309:m 289:M 267:, 260:| 254:r 248:| 242:m 239:M 236:G 227:= 224:U 172:r 150:, 145:r 135:g 129:F 123:= 118:g 114:W 110:= 107:U 87:U 35:.

Index


Earth
gravitational field
kinetic energy
potential energy
massive
gravitational field
mechanical work
kinetic energies
fall
displacement vector
scalar product
gravitational constant
gravity of Earth
center of mass
classical mechanics
masses
gravitational potential
Conservation of energy
negative
Newton's law of gravitation
binomial approximation
Mass in general relativity

geodesics
general relativity
spacetime
general relativity
Landau–Lifshitz pseudotensor
classical mechanics

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