Isimiso se-Pascals - izinkinga nezixazululo
1. Okwaziwayo:
Indawo ye-A 1 = 10 cm 2
Indawo ye-A 2 = 100 cm 2
Amandla 2 (F 2 ) = 100 Newton
Kufunwa: Amandla 1 (F 1 )
Isixazululo:
P = F / A
P = ingcindezi , F = amandla , A = indawo
P1 =F1 / TO1
P2 =F2 / TO2
P1 =P2
F1 / TO1 =F2 / TO2
F 1 / 10 cm 2 = 100 N / 100 cm 2
F 1/10 = 1 N
F 1 = (10)(1 N)
F 1 = 10 Newton
2. Uma indawo ka-A 1 = 0.001 m2 kanye nendawo ka-A 2 = 0.1 m2 , amandla okufaka angaphandle F 1 = 100 N, khona-ke amandla okukhipha angaphandle F 2?
Kwaziwa:
Indawo ye-A 1 = 0.001 m 2
Indawo ye-A 2 = 0.1 m 2
Amandla okufaka angaphandle F 1 = 100 Newtons
Okufunwayo : Amandla okukhipha angaphandle (F 2 )
Isixazululo:
P1 =P2
F1 / TO1 =F2 / TO2
100 N / 0.001 m 2 = F 2 / 0.1 m 2
100 N / 0.001 = F 2 / 0.1
100,000 N = F 2 / 0.1
F 2 = (0.1)(100,000 N)
F 2 = 10,000 N
3. Isisindo semoto = 16,000 N. Iyini amandla okufaka angaphandle F…
Kwaziwa:
Isisindo semoto (w) = 16,000 N
Indawo ye-B (A B ) = 4000 cm 2 = 4000 / 10,000 m 2 = 4 / 10 m 2 = 0.4 m 2
Indawo ye-A (A A ) = 50 cm 2 = 50 / 10,000 m 2 = 0.005 m 2
Kufunwa: I-Force F
Isixazululo:
F / A A = w / A B
F / 0.005 m 2 = 16,000 N / 0.4 m 2
F / 0.005 = 16,000 N / 0.4
F / 0.005 = 40,000 N
F = (40,000 N)(0.005)
F = 200 Newton
4.
Indawo ka-A ingu-60 cm 2 kanti indawo ka-B ingu-4,200 cm 2 , nquma amandla okufaka angaphandle ka-F.
Kwaziwa:
Indawo ye-A (A A ) = 60 cm 2
Indawo ye-B (A B ) = 4200 cm 2
Isisindo w (w) = 3500 Newton
Kufunwa: F 1
Isixazululo:
Amandla ka-F abalwe kusetshenziswa i-equation yesimiso sikaPascal :
F 1 / A 1 = F 2 / A 2
F 1 / 60 cm 2 = 3500 N / 4200 cm 2
F 1 / 60 = 35 N / 42
F 1 = (60)(35) / 42
F 1 = 2100 / 42
F 1 = 50 Newton
5. I-hydraulic lift ine-cross section enkulu kanye ne-cross section encane. Indawo enkulu ye-cross section iphindwe izikhathi ezingu-20 kune-cross section encane. Uma engxenyeni encane ye-cross power inikezwa amandla okufaka angu-25 N, khona-ke nquma amandla okukhipha.
Kwaziwa:
Indawo encane enqamula ingxenye (A 1 ) = A
Indawo enkulu enqamulayo (A 2 ) = 20A
Amandla okufaka (F 1 ) = 25 N
Okufunwayo: Amandla okukhipha (F 2 )
Isixazululo:
- Iyini isimiso sikaPascal?
- Impendulo: Isimiso sikaPascal sithi noma yiluphi ushintsho ekucindezelweni okusetshenziswayo kunoma yisiphi isikhathi oketshezini ludluliselwa ngaphandle kokuncipha kulo lonke uketshezi kuzo zonke izinhlangothi.
- Isebenza kanjani i-hydraulic lift ngokusekelwe ku-Pascal's Principle?
- Impendulo: Ku-hydraulic lift, amandla amancane asetshenziswa ku-piston yendawo encane adala ingcindezi edluliselwa inganciphisiwe ku-piston yendawo enkulu. Lokhu kuphumela emandleni amakhulu ku-piston enkulu, okwenza ikwazi ukuphakamisa izinto ezisindayo.
- Kungani ushintsho lwengcindezi lungancishisiwe ku-Pascal's Principle?
- ImpenduloNgenxa yokuthi uketshezi alucindezelwa, uma ingcindezi ifakwa engxenyeni eyodwa yoketshezi, ayikwazi ukucindezela, ngakho-ke idlulisela ushintsho lokucindezela ngokulinganayo kuzo zonke ezinye izingxenye zoketshezi.
- Ukwanda kokujula kuthinta kanjani ukucindezeleka koketshezi, uma ucabangela isimiso sikaPascal?
- Impendulo: Njengoba ukujula kukhuphuka oketshezini, ingcindezi nayo iyanda ngenxa yesisindo soketshezi olungenhla. Lokhu kuhambisana nesimiso sikaPascal njengoba ukwanda kwengcindezi kwenzeka ngokulinganayo ekujuleni okuthile.
- Kungani izindlebe zethu ziqhuma uma senyuka noma sehla ngokushesha endizeni noma sicwila phansi emanzini?
- Impendulo: Ukuphakama okusheshayo noma izinguquko zokujula kuholela ekushintsheni okusheshayo kwengcindezi endaweni ezungezile (umoya noma amanzi). Izindlebe zethu ziyaqhuma njengendlela yokulinganisa ingcindezi yangaphakathi nengcindezi yangaphandle, ngokuvumelana neSimiso sikaPascal.
- Uma isirinji evaliwe engenamabhamuza omoya icindezelwe, kungani kunzima ukucindezela uketshezi olungaphakathi?
- Impendulo: Uketshezi alunakucindezelwa nhlobo. Uma uzama ukunciphisa umthamo woketshezi olungaphakathi kwesirinji, ingcindezi iyanda, imelane nokucindezelwa, ngokusho kwePascal's Principle.
- I-Pascal's Principle iyichaza kanjani isenzakalo sokuqhuma kwedamu uma kudaleka umgodi omncane phansi kwalo?
- Impendulo: Ngenxa yesisindo samanzi, ingcindezi esezansi kwedamu iphakeme. Ngisho nomgodi omncane uvumela ukuthi le ngcindezi ephezulu ifakwe ezakhiweni ezizungezile, okungaholela ekwehlulekeni okukhulu kwedamu.
- Kungani kulula ukukhafula uketshezi oluvela ebhodleleni elicishe ligcwale kunolucishe lungenalutho?
- Impendulo: Ibhodlela eligcwele linoketshezi oluningi, lapho licindezelwa, lidlulisela ingcindezi esetshenziswayo ngempumelelo enkulu kulo lonke uketshezi ngenxa yeSisekelo sikaPascal. Ibhodlela elicishe lingenalutho linomoya omningi, okungacindezelwa, ngakho-ke ingcindezi efanayo ayikhiqizi uketshezi olunamandla.
- Ezinhlelweni ze-hydraulic, ingabe amandla okukhipha ahlala emakhulu kunamandla okufaka?
- Impendulo: Akunjalo ngempela. Isilinganiso samandla okukhipha amandla okufaka sinqunywa yisilinganiso sezindawo zama-piston okukhipha kanye nama-piston okufaka. Uhlelo luklanyelwe ukukhulisa amandla ngokuba nendawo enkulu ye-piston yokukhipha kunokufaka, kodwa yisilinganiso sendawo esinquma ukukhulisa amandla.
- Uma sicabangela isimiso sikaPascal, kungani izidalwa zasolwandle ezijulile zinemizimba eqinile neqinile?
- Impendulo: Izidalwa zasolwandle ezijulile zithola ukucindezeleka okukhulu ngenxa yesisindo sekholomu yamanzi ephezu kwayo. Ukuze ziphile, lezi zidalwa ziye zashintsha zaba nemizimba eqinile neqinile engamelana nalezi zingcindezi eziphakeme.
