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Fórsa

Bosca Sonraí Méid FisiciúilFórsa
SiombailF Cuir in eagar ar Wikidata
Foirmle
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Déantar cur síos ar fhórsaí freisin mar bhrú nó tharraingt ar réad. Is féidir leo a bheith mar gheall ar fheiniméin amhail imtharraingt, maighnéadas, nó aon rud a d'fhéadfadh luasghéarú a chur faoi réad.

San fhisic, is éard is fórsa ann ná aon ní a athraíonn luas, treo, nó cruth réada. I bhfocail eile, is é is fórsa ann ná ní a chuireann ar réad de mhais M a treoluas a athrú (lena n-áirítear rud a thosú ar ghluaiseacht ó fhos), i.e., a luas á ghéarú, nó réad solúbtha a dhífhoirmiú. Bíonn idir méadaíocht agus treo aige, rud a chiallaíonn gur chainníocht veicteoireach é. Cuireadh Dara Dlí Newton, F = ma, le chéile ar dtús i dtéarmaí a bhí beagán éagsúil ach comhionann, áfach: deir an leagan bunaidh go bhfuil an fórsa glan ag gníomhú ar réad i gcomhréir dhíreach leis a chuid athruithe móimintim.

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Fórsa
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