Amandla ajwayelekile - izinkinga nezixazululo

Izinkinga ezixazululiwe emithethweni kaNewton yokuhamba - Amandla ajwayelekile 

1. Into ehlezi etafuleni, eboniswe esithombeni esingezansi. Isisindo sento siyi-1 kg. Ukusheshisa kwamandla adonsela phansi kungu-9.8 m/s ² . Thola amandla avamile asetshenziswa entweni eduze kwetafula.

Kwaziwa:

Isisindo (m) = 1 kg

Ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s ²

Isisindo (w) = mg = (1 kg)(9.8 m/s ² ) = 9.8 kg m/s ² = 9.8 amaNewton

Okufunwayo: amandla avamile (N)

Isixazululo:

Into iphumule etafuleni, ngakho amandla aphelele entweni ayi-zero (umthetho wokuqala noma wesibili kaNewton). Isisindo sento sisebenza siqonde phansi, sibheke enkabeni yoMhlaba. Kumelwe kube khona elinye amandla entweni ukuze kulinganiswe amandla adonsela phansi . Into ehlezi etafuleni, ukuze itafula lisebenzise la mandla aphezulu. Amandla asetshenziswa yitafula avame ukubizwa ngokuthi amandla ajwayelekile (N). Okujwayelekile kusho ukuthi aqondile.

Khetha isiqondiso esibheke phezulu njengesiqondiso esihle sika-y. Amandla aphelele entweni yilawa:

∑ I-Fy = 0

N – w = 0

N = w

N = mg

N = 9.8 Newton

Amandla avamile entweni, asetshenziswa yithebula angama-9.8 N phezulu.

2. Izinto ezimbili ezilele etafuleni. Isisindo sento 1 (m ₁ ) = 1 kg, isisindo sento 2 (m ₂ ) = 2 kg, ukusheshisa ngenxa yamandla adonsela phansi (g) = 9.8 m/s ^2. Nquma ubukhulu kanye nesiqondiso samandla avamile asetshenziswa yi-m ₂ ku-m ₁ kanye namandla avamile asetshenziswa yithebula ku-m ₂.

Isixazululo

Kwaziwa:

Isisindo sento 1 (m ₁ ) = 1 kg

Isisindo sento 2 (m ₂ ) = 2 kg

Ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s ²

Isisindo sento 1 (w ₁ ) = m ₁ g = (1)(9.8 m/s ² ) = 9.8 kg m/s ² = 9.8 amaNewton

Isisindo sento 2 (w ₂ ) = m ₂ g = (2)(9.8 m/s ² ) = 19.6 kg m/s ² = 19.6 amaNewton

Kufunwa: N ₁ kanye N ₂

Isixazululo:

(a) Amandla ajwayelekile asetshenziswa yi-m ₂ kuya ku-m ₁ (N ₁ )

N ₁ = w ₁ = 9.8 Newton

Isiqondiso se-N1 _siphezulu.

(b) Amandla ajwayelekile asetshenziswa yithebula ku-m ₂ (N ₂ )

N ₂ = w ₁ + w ₂ = 9.8 AmaNewton + 19.6 AmaNewton = 29.4 AmaNewton

Isiqondiso se-N2 _siphezulu.

3. Into elele etafuleni. Isisindo sento singama-2 kg, ukusheshisa ngenxa yamandla adonsela phansi kungu-9.8 m/s ² . Ubukhulu bamandla u-F bungama-Newton ayi-10. Thola ubukhulu kanye nesiqondiso samandla avamile asetshenziswa yithebula entweni.

Isixazululo

Kwaziwa:

Isisindo sento (m) = 2 kg

Ukusheshisa ngenxa yamandla adonsela phansi (g) = 9.8 m/s ²

Isisindo (w) = mg = (2 kg)(9.8 m/s ² ) = 19.6 kg m/s ² = 19.6 amaNewton

Amandla F (F) = 10 Newton

Okufunwayo : ubukhulu kanye nesiqondiso samandla avamile (N)

Isixazululo:

isiqondiso samandla avamile siphezulu.

Ubukhulu bamandla avamile:

∑ F = 0

N – F – w = 0

N = F + w

N = 10 Newtons + 20 Newtons

N = 30 Newton

4. Into elele etafuleni. Isisindo sento singu-1 kg, ukusheshisa ngenxa yamandla adonsela phansi kungu-9,8 m/s ² , amandla F ₁ angu-10 N kanye namandla F ₂ angu-20 N. Thola ubukhulu kanye nesiqondiso samandla avamile asetshenziswa yithebula entweni. g = 9.8 m/s ²

Isixazululo

Kwaziwa:

Isisindo (m) = 1 kg

Ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s ²

Isisindo (w) = mg = (1 kg)(9.8 m/s ² ) = 9.8 kg m/s ² = 9.8 amaNewton

F ₁ = 10 Newton

F ₂ = 20 Newton

Okufunwayo: ubukhulu kanye nesiqondiso samandla avamile (N)

Isixazululo:

Isiqondiso samandla avamile siphezulu.

Ubukhulu bamandla avamile:

∑ F = 0

N – F ₂ – w + F ₁ = 0

N = F ₂ + w – F ₁

N = 20 Newtons + 9.8 Newtons – 10 Newtons

N = 19.8 Newton

5. Isisindo sento (m) = 2 kg, ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s ² , i-engeli = 30 ^o . Thola ubukhulu kanye nesiqondiso samandla avamile asetshenziswa entweni.

Isixazululo:

u-w uyisisindo, u-w _x uyisici esivundlile sesisindo, u -w _y uyisici esiqondile sesisindo, u-N ungamandla avamile.

Kwaziwa:

isisindo (m) = 2 kg

ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s ²

isisindo (w) = mg = (2 kg)(9.8 m/s ² ) = 19.6 kg m/s ² = 19.6 amaNewton

w _x = w sin 60 ^o = (19.6 N)(0.5) √ 3 = 9.8 √ 3 AmaNewton

w _y = w cos 60 = (19.6 N)(0.5) = 9.8 amaNewton

Okufunwayo: amandla avamile (N)

Isixazululo:

∑ F = 0

N – w _y = 0

N = w _y

N = 9.8 Newton

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1. Isisindo kanye nesisindo
2. amandla ajwayelekile
3. Umthetho wesibili wokunyakaza kukaNewton
4. Amandla okungqubuzana
5. Ukunyakaza endaweni evundlile ngaphandle kwamandla okungqubuzana
6. Ukunyakaza kwemizimba emibili ngokusheshisa okufanayo endaweni evundlile eqinile ngamandla okungqubuzana
7. Ukunyakaza endizeni ethambekele ngaphandle kwamandla okungqubuzana
8. Ukunyakaza endizeni ethambekele emangelengele ngamandla okungqubuzana
9. Ukunyakaza e-lifti
10. Ukunyakaza kwemizimba kuxhunywe ngezintambo nama-pulleys
11. Imizimba emibili enesilinganiso esifanayo sokusheshisa
12. Ukuzungeza ijika eliyisicaba - amandla okunyakaza okujikelezayo
13. Ukuzungeza ijika eligobile - amandla okunyakaza okujikelezayo
14. Ukunyakaza okufanayo kumbuthano ovundlile
15. Amandla aphakathi ahambisanayo ajikelezayo