Kulokhu okuchaziwe, thatha isilinganiso samandla adonsela phansi emhlabeni. Faka phakathi amayunithi wokulinganisa.
Context:Ngamayunithi e-SI, lokhu kusheshisa kuboniswa ngamamitha ngomzuzwana owodwa (ngezimpawu, m/s2 noma m·s−2) noma ngokulinganayo ngama-newton ngekhilogremu (N/kg noma N·kg−1). Eduze komhlaba, ukusheshisa kwamandla adonsela phansi cishe kungu-9.81 m/s2 (32.2 ft/s2), okusho ukuthi, ngaphandle kwemiphumela yokumelana komoya, isivinini sento ewela ngokukhululeka sizokhula cishe ngo-9.81 metres (32.2 ft) ngomzuzwana ngomzuzwana. Lobu bukhulu ngezinye izikhathi bubizwa ngokungahleliwe ngokuthi i-g encane (ngokuphambene, i-gravitational constant G ibizwa ngokuthi i-G enkulu).  Amandla okudonsa adonsela phansi omhlaba ayahlukahluka kuye ngendawo. Inani elibizwa ngokuthi "isilinganiso" ebusweni bomhlaba, elaziwa ngokuthi amandla adonsela phansi ajwayelekile, ngokwencazelo, ngu-9.80665 m/s2 (32.1740 ft/s2). Lobu bukhulu buchazwa ngezindlela ezihlukahlukene njengama-gn, ge (nakuba lokhu ngezinye izikhathi kusho inani elijwayelekile elisenkabazwe eMhlabeni, 9.78033 m/s2 (32.0877 ft/s2)), g0, gee, noma nje g (okubuye kusetshenziselwe inani lendawo eliguquguqukayo).  Isisindo sento ethile ebusweni bomhlaba siyisisindo esingaphansi kwaleyo nto, esinikezwe umthetho wesibili kaNewton, noma uF = m a (amandla = mass × acceleration). Ukusheshisa kwamandla adonsela phansi kunomthelela ekusheshiseni okuphelele kwamandla adonsela phansi, kodwa nezinye izici, njengokujikeleza komhlaba, nazo zinomthelela, ngakho-ke, zithinta isisindo sento. Ngokuvamile amandla adonsela phansi awahlanganisi amandla adonsela phansi oNyanga neLanga, okucatshangelwayo ngokwemiphumela yamagagasi.
9.80665 m/s2 noma 32.1740 ft/s2