गुरुत्वाकर्षण

gurutvakarshan (aangrezi: Gravitation) ek padarth dvara doosare ki or akrisht hone ki pravritti hai. gurutvakarshan ke bare mean pahali bar koee ganitiy sootr dene ki koshish aijak nyootan dvara ki gayi thi. unhoanne gurutvakarshan siddhaant ka pratipadan kiya. nyootan ke siddhant ko bad mean albart aianstain dvara sapekshata siddhaant se badala gaya. isase poorv varahamihir ne kaha tha ki kisi prakar ki shakti hi vastuoan ko prithvi par chipakae rakhati hai.

gurutvakarshan brahmand mean maujood char maulik baloan mean se ek bal hai. yah aantariksh mean maujood dravyaman vali sabhi chijoan ke bich ek lanbi doori ka akarshan bal hai. isaki vajah se hi chijoan ko vajan prapt hota hai. prithvi par gurutvakarshan nirantar prati sekand 9.8 varg mitar (9.8 m/s2) jitana hota hai. yah hamean prithvi ke bahar girane se bachata hai aur prithvi ko apani soory ki asapas ki kaksha mean banae rakhata hai. gurutvakarshan ki vajah se hi sadhe char arab sal pahale prithvi aur sooraj ki utpati huee thi. yah ashcharyajanak bat hai ki brahmand mean har bhari vastu doosari chijoan ko apani or akarshit karati hai. isaka arth yah hua ki hamara ghar, prithvi, 25 lakh prakash varsh door eandromeda akashaganga mean sthit blaikahol, yah sabhi apase gurutviy bal se akarshit haian aur ap unase.

mahan vaijnanik aijek nyootan ne 17vian sadi mean pata lagaya ki do vastuoan ke bich ki doori ke varg jitane aantar par gurutvakarshan bal ki takat ghatati hai, to yadi ap kisi bhi chij se doguna aantar par hoange, tab gurutvakarshan ek chauthaee jitana hi majaboot hoga. unhoanne yah bhi pata lagaya ki gurutvakarshan ki shakti vastu ke dravyaman ke anupat mean hoti hai. arthath padarth jitana b da hoga, usaka gurutvakarshan bal utana hi majaboot hoga.

ham sab prithvi ka khianchav mahasoos kar sakate haian, lekin chandrama ke khianchav ko mahasoos nahian kar pate, kyoanki chandrama chhota haian aur ham se bahut hi door hai. lekin usaka gurutvakarshan prithvi par samudr mean jvar paida karane ke lie saksham hai. chandrama par gurutvakarshan bal prithvi par maujood gurutvakarshan bal se 16 pratishat jitana hai aur mangal grah ka prithvi se 38 pratishat jitana hai, jabaki sauramandal ke sabase b de grah guru ka gurutvakarshan bal prithvi ke gurutvakarshan bal se 2.5 guna hai.

panne ki pragati avastha

adhar

prarambhik

madhyamik

poornata

shodh

sanbandhit lekh

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