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Caibidil 9

Caibidil 9. Fórsaí, Mais agus Móiminteam. Fórsaí. aon ní a n-athraíonn treoluas ruda Siombail : F Aonad : Niútan. N Veictear Samplaí Frithchuimilt-fórsa a chuireann i gcoinne gluaiseacht idir choirp Domhaintarraingt-fórsa idir aon dá chorp sa chruinne. Mais.

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Caibidil 9

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  1. Caibidil 9 Fórsaí, Mais agus Móiminteam

  2. Fórsaí • aon ní a n-athraíonn treoluas ruda • Siombail: F Aonad: Niútan. N Veictear • Samplaí • Frithchuimilt-fórsa a chuireann i gcoinne gluaiseacht idir choirp • Domhaintarraingt-fórsa idir aon dá chorp sa chruinne

  3. Mais • Tomhas ar a dheacra is atá sé corp a bhogadh • Aonad – cileagram Kg • Scálach • Siombail – m

  4. Gaol idir F –a-m • a α F • a α 1/m • F = ma • Niútain • – Fórsa a thugann luasghéarú de 1ms-2 do chorp le mais 1kg

  5. Meáchán • Fórsa domhaintarraingt ar corp • Siombail – W • Aonad – Niútain • Veicteoir Difríochtaí idir mais agus meáchán • Mais – scalach Meáchán – veicteoir • Mais – kg Meáchán – Niutain • Ní athraíonn mais ó ait go háit Is féidir le meáchán choirp athrú m.s .ar an nGealach

  6. Chun a thaispeáint go bhfuil F α a Fána = y/x = F/a = m F a

  7. Cén fáth? • http://dsc.discovery.com/tv-shows/mythbusters/videos/phone-book-friction.htm

  8. Móiminteam • Móiminteam: • Toradh mais faoi treoluas choirp. • p = mais x treoluas = mv • Is veictear é . • Siombail: p. Aonad: Kgms-1.

  9. Dlíthe Newton 1 • Fanfaidh gach corp ar fos nó ag gluaiseacht faoi threoluas tairiseach mura ngníomhaíonn fórsa seachtrach neamhchothrom air.

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