31) fórsaí Flashcards

1
Q

cad is fórsa ann

A

is é fórsa ann ná aon rud a chúsaíonn le luasgéarú

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2
Q

2 iarmhart a bíonn ag fórsaí ar corp

A

luas a athrú
treo a athrú

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3
Q

má bíonn fórsa égothrom ar corp tarlaíonn

A

athrú luas

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4
Q

cad é fórsa cothrom

A

fórsa tománta = fórsa frithíochta

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5
Q

cad a tarlaíonn de fórsaí cothroma

A

luas tariseach

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6
Q

cad é fórsa égcothroma

A

fórsa amháin níos mó ná fórsa eile

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7
Q

cad a tarlaíonn le fórsaí égcothroma

A

luasgéarú nó luasmoillú

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8
Q

An Aonad Fórsa?

A

Niútan (N)

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9
Q

Conas a thomas fórsa?

A

Niútanmeadair

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9
Q

Mínigh frithchumilt

A

Frithchuimilt is ea an bhfórsa a chuireann i gcoinne na gluaiseachta

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9
Q

2 slí chun frithchuimilt a laghdú?

A

Béalú (lubrication)
Sruthliniú (níos aerodynamic)

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10
Q

2 míbuntaistí de frithchumilt?

A

Is cúis le hidiú é
Cuireann frithchuimilt fuinneamh amú

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11
Q

Mínigh meachain

A

Tá meachain ar thomas ar fhórsa domhantarraingt ar chorp

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12
Q

2 buntaistí de frithchuimilt?

A

Moilíonn sé báisteach agus sneachta nuair a bhfuil sé ag titim
Is cúis le coscáin é

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13
Q

2 difríocht idir meachain agus mais?

A

thomas= (n) vs (kg)
Tá mais an méid damhna (matter) i corp, ach tá meachain an fórsa domhantarraingt an chorp

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13
Q

Fóirmle meachain?

A

W=mg

13
Q

Mínigh an Dlí Hooke

A

Bíonn síneadh sprionga bhísigh i gcomhréir dhíreach leis an bhfórsa feidhmeach

14
Q

Cad é meachain de chorp le mais 90KG?

A

W=mg
W=90 x g(10)
W=900n