Amandla aphakathi - izinkinga nezixazululo

Amandla aphakathi - izinkinga nezixazululo

1. Ibhola elingamagremu angu-200, elinamathiselwe ekugcineni kwentambo, lizungezwa yindilinga evundlile enejubane eliyi-angle elingu-5 rad s ^-1 . Uma ubude bentambo bungama-60 cm, iyini amandla aphakathi nendawo?

K nown:

Isisindo sento (m) = 200 gr = 200/1000 kg = 2/10 kg = 0.2 kg

Isivinini se-angular (ω) = 5 rad/s

Ubude bentambo = irediyasi (r) = 60 cm = 60/100 m = 0.6 m

Okufunwayo: Amandla aphakathi nendawo

Isixazululo:

Amandla aphakathi nendawo yiwona abangela ukusheshisa kwe-centripetal.

Isibalo samandla aphakathi nendawo:

∑F = ma _s

∑F = mv ² /r = m ω ² r

∑ F = Amandla ase-Centripetal , m = isisindo sento , v = ijubane eliqondile , ω = ijubane le-angular , r = irediyasi.

∑F = m ω ² r = (0.2) (5) ² (0.6) = (0.2) (25) (0.6) = 3 N

2. Itshe elinamathiselwe ekugcineni kwentambo bese lijikeleziswa ngumfundi ngendilinga evundlile. Uma ijubane lokugcina letshe = 2 x ijubane lokuqala, khona-ke liyini amandla aphakathi nendawo?

Kwaziwa:

Isisindo setshe = m

Ijubane likaStone = v

Ubude bentambo = irediyasi = r

Okufunwayo: Amandla aphakathi nendawo

Isixazululo:

3. Umgwaqo ogobile werediyasi R wenzelwe ukuthi imoto ehamba ngesivinini esingu-10 ms ^–1 ikwazi ukujika ngokuphephile. I-coefficient yokungqubuzana okungaguquki phakathi kwemoto nomgwaqo = 0.5. Iyini irediyasi? Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 ms ^–2.

Kwaziwa:

Isivinini (v) = 10 m/s

I-coefficient yokungqubuzana okungaguquki phakathi kwemoto nomgwaqo (μs ₎ = 0.5

Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s ²

Okufunwayo: Irediyasi

Isixazululo:

Amandla kuphela ohlangothini oluvundlile amandla okungqubuzana okungaguquki. Isibalo sokungqubuzana okungaguquki:

4. Isilinganiso sokungqubuzana okungaguquki phakathi kwethayi nomgwaqo singu-0.4. Uma ukusheshisa ngenxa yamandla adonsela phansi kungu-10 m/s ² , yisiphi isivinini esiphezulu ukuze imoto ikwazi ukujika ngaphandle kokushelela endleleni egobile.

Kwaziwa:

I-Coefficient yokungqubuzana okungaguquki (μ)_s= = 0.4

Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s ²

Irediyasi yendlela (R) = amamitha angu-40

Okufunwayo: isivinini esiphezulu (v)

Isixazululo:

Isibalo somthetho wesibili kaNewton ngokunyakaza okujikelezayo okufanayo:

ΣF = amandla ase-centripetal = amandla aphelele , m = m ass , a _s = ukusheshisa okuphakathi , v = isivinini esiqondile , R = irediyasi yendlela

Amandla ase-Centripetal

Amandla ase-centripetal amandla aphelele akhiqiza ukusheshisa kwe-centripetal. Kulokhu, amandla ase-centripetal amandla okungqubuzana okungaguquki.

Isibalo samandla okungqubuzana okungaguquki:

μ _s = i-coefficient yokungqubuzana okungaguquki , w = isisindo , m ​​= isisindo , g = ukusheshisa ngenxa yamandla adonsela phansi

Isivinini esiphezulu (v):

1. Iyini amandla aphakathi nendawo?
   • Impendulo: Amandla aphakathi yiwona asebenza entweni ehamba ngendlela eyindilinga, eqondiswe enkabeni yendilinga noma indlela. Yiwona aphethe ukugcina into isesimweni sayo esiyindilinga.
2. Amandla aphakathi nendawo ahluke kanjani kumandla aphakathi nendawo?
   • Impendulo: Amandla ase-Centripetal angamandla angempela asebenza entweni ukuze iqhubeke ihamba ngendlela eyindilinga. Ngakolunye uhlangothi, amandla ase-Centrifugal angamandla abonakalayo abonakala esunduza into kude nesikhungo sendilinga uma ibonwa kusuka kufreyimu yokubhekisela ejikelezayo. Amandla ase-Centrifugal avame ukubizwa ngokuthi amandla “aqanjiwe” noma “angamampunge”.
3. Kwenzekani uma amandla aphakathi entweni ejikelezayo esuswa ngokuzumayo?
   • Impendulo: Uma amandla aphakathi entweni ejikelezayo esuswa ngokuzumayo, into izohamba ngomugqa oqondile iqonde endleleni eyindilinga endaweni lapho amandla asuswe khona, kulandela umthetho wokuqala kaNewton wokunyakaza.
4. Amandla aphakathi nendawo adingekayo ashintsha kanjani ngerediyasi yendlela eyindilinga ukuze kube nesivinini esingaguquki?
   • Impendulo: Amandla aphakathi nendawo adingekayo alingana ngokuphambene nerediyasi yendlela eyindilinga. Uma ijubane lihlala lingaguquki kodwa irediyasi ikhuphuka, amandla aphakathi nendawo adingekayo ayancipha, futhi okuphambene nalokho.
5. Amandla aphakathi nendawo ashintsha kanjani uma ijubane lento ejikelezayo liphindwe kabili?
   • Impendulo: Amandla aphakathi nendawo alingana ngqo nesikwele sejubane lento. Ngakho-ke, uma ijubane liphindwe kabili, amandla aphakathi nendawo adingekayo aba makhulu ngokuphindwe kane.
6. Ingabe amandla adonsela phansi angasebenza njengamandla aphakathi nendawo?
   • Impendulo: Yebo, amandla adonsela phansi angasebenza njengamandla aphakathi nendawo. Isibonelo esiyinhloko amandla adonsela phansi phakathi koMhlaba neNyanga, agcina iNyanga ijikeleza uMhlaba.
7. Kungani uzizwa ucindezelwa eceleni uma ujika imoto ngokushesha?
   • Impendulo: Uma imoto ijika ngokujiya, amandla aphakathi nendawo asebenza enkabeni yokujika, egcina imoto isendleleni yayo eyindilinga. Kodwa-ke, umzimba wakho uvame ukuqhubeka uqonde ngenxa yokungakhathali. Lokhu kusunduza kwangaphandle okuzwayo kuwukusabela emandleni aphakathi nendawo futhi kuvame ukuphambaniswa ngokuthi “amandla aphakathi nendawo.”
8. Isisindo sento sithinta kanjani amandla aphakathi nendawo adingekayo ukuze kuhambisane nesivinini esingaguquki?
   • Impendulo: Amandla aphakathi nendawo adingekayo alingana ngqo nobunzima bento. Uma ubunzima bento buphindwe kabili, amandla aphakathi nendawo adingekayo nawo aphindeka kabili, uma kubhekwa ukuthi ijubane kanye nerediyasi kuhlala kungaguquki.
9. Iyiphi indima edlalwa ukungqubuzana emandleni aphakathi lapho imoto ijika?
   • Impendulo: Uma imoto ijika, amandla okungqubuzana phakathi kwamathayi nomgwaqo anikeza amandla afanele aphakathi nendawo ukuze imoto ihlale endleleni egobile. Uma kungekho ukungqubuzana (isb., emgwaqweni obandayo), imoto ibingeke ikwazi ukujika futhi ibizoshelela ngaphandle.
10. Ingabe ukucindezeleka kwentambo kungasebenza njengamandla aphakathi nendawo?

• Impendulo: Yebo, ukucindezeleka entanjeni noma entanjeni kungasebenza njengamandla aphakathi nendawo. Isibonelo, lapho into ijikeleziswa ngendlela eyindilinga kusetshenziswa intambo, ukucindezeleka entanjeni kunikeza amandla aphakathi nendawo adingekayo ukuze into iqhubeke ihamba entanjeni.