Amandla ajwayelekile - izinkinga nezixazululo

Izinkinga ezixazululiwe emithethweni kaNewton yokuhamba - Amandla ajwayelekile 

1. Into ehlezi etafuleni, eboniswe esithombeni esingezansi. Isisindo sale nto singama-1 kg. Ukusheshisa kwamandla adonsela phansi ingu-9.8 m/s2Thola amandla avamile asetshenziswa entweni eseduze nethebula.

Amandla-avamile-–-izinkinga-nezixazululo-1-1

Kwaziwa:

Isisindo (m) = 1 kg

Ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s2

Isisindo (w) = mg = (1 kg)(9.8 m/s2) = 9.8 kg m/s2 = 9.8 uNewton

Okufunayo: amandla avamile (N)

Isixazululo:

Amandla ajwayelekile - izinkinga nezixazululo 2

Into ihlezi 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 avamile (N). Okujwayelekile kusho okuqondile.

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

∑Usuku lwesikhombisa = 0

N – w = 0

N = w

N = mg

N = 9.8 Newton

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

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2. Izinto ezimbili ezilele etafuleni. Imisa kwento 1 (m1) = 1 kg, isisindo sento 2 (m2) = 2 kg, ukusheshisa ngenxa yamandla adonsela phansi (g) =9.8 m/s2Thola ubukhulu kanye nesiqondiso samandla avamile asetshenziswa ngu-m2 ku-m1 kanye namandla avamile asetshenziswa yitafula eliku-m2.

Amandla ajwayelekile - izinkinga nezixazululo 3

Isixazululo

Amandla ajwayelekile - izinkinga nezixazululo 4

Kwaziwa:

Isisindo sento 1 (m1) = 1 kg

Isisindo sento 2 (m2) = 2 kg

Ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s2

Isisindo kwento 1 (w1) = m1 g = (1)(9.8 m/s2) = 9.8 kg m/s2 = 9.8 uNewton

Isisindo sento 2 (w)2) = m2 g = (2)(9.8 m/s2) = 19.6 kg m/s2 = 19.6 uNewton

Kufunwa: N1 no-N2

Isixazululo:

(a) Amandla avamile asetshenziswa ngu-m2 kuya ku-m1 (N1)

N1 = w1 = 9.8 uNewton

Isiqondiso se-N1 iphezulu.

(b) Amandla avamile asetshenziswa yitafula ku-m2 (N2)

N2 = w1 +w2 = 9.8 AmaNewton + 19.6 AmaNewton = 29.4 AmaNewton

Isiqondiso se-N2 iphezulu.

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3. Into elele etafuleni. Isisindo sento singama-2 kg, ukusheshisa ngenxa yamandla adonsela phansi kungu-9.8 m/s2Ubukhulu bamandla u-F bungama-Newton ayi-10. Thola ubukhulu kanye nesiqondiso samandla avamile asetshenziswa yithebula entweni.

Amandla ajwayelekile - izinkinga nezixazululo 5

Isixazululo

Amandla ajwayelekile - izinkinga nezixazululo 6

Kwaziwa:

Isisindo sento (m) = 2 kg

Ukusheshisa ngenxa yamandla adonsela phansi (g) = 9.8 m/s2

Isisindo (w) = mg = (2 kg)(9.8 m/s2) = 19.6 kg m/s2 = 19.6 uNewton

Amandla F (F) = 10 Newton

wayefuna : 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

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4. Into elele etafuleni. Isisindo sento singu-1 kg, ukusheshisa ngenxa yamandla adonsela phansi kungu-9,8 m/s2, phoqelela u-F1 ingu-10 N kanye ne-force F2 ingu-20 N. Thola ubukhulu kanye nesiqondiso samandla avamile asetshenziswa yithebula entweni. g = 9.8 m/s2

Amandla ajwayelekile - izinkinga nezixazululo 7

Isixazululo

Amandla ajwayelekile - izinkinga nezixazululo 8

Kwaziwa:

Isisindo (m) = 1 kg

Ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s2

Isisindo (w) = mg = (1 kg)(9.8 m/s2) = 9.8 kg m/s2 = 9.8 uNewton

F1 = 10 uNewton

F2 = 20 uNewton

Kufunwa: ubukhulu kanye nesiqondiso samandla avamile (N)

Isixazululo:

Isiqondiso samandla avamile siphezulu.

Ubukhulu bamandla avamile:

∑F=0

N – F2 – w + F1 = 0

N = F2 + w – F1

N = 20 Newtons + 9.8 Newtons – 10 Newtons

N = 19.8 Newton

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5. Isisindo sento (m) = 2 kg, ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s2, i-engeli = 30oThola ubukhulu kanye nesiqondiso samandla avamile asetshenziswa entweni.

Amandla ajwayelekile - izinkinga nezixazululo 9

Isixazululo:

Amandla ajwayelekile - izinkinga nezixazululo 10

u-w isisindo, u-wx ingxenye evundlile yesisindo, wy ingxenye eqondile yesisindo, u-N ungamandla avamile.

Kwaziwa:

isisindo (m) = 2 kg

ukusheshisa kwamandla adonsela phansi (g) = 9.8 m/s2

isisindo (w) = mg = (2 kg)(9.8 m/s2) = 19.6 kg m/s2 = 19.6 uNewton

wx = isono 60o = (19.6 N)(0.5)√3= 9.8√3 Newton

wy = w cos 60 = (19.6 N)(0.5) = 9.8 Newton

Okufunayo: amandla ajwayelekile (N)

Isixazululo:

∑F=0

N – wy = 0

N = wy

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

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