Te kaupapa o Pascal – ngā raruraru me ngā otinga
1. Mōhiotia:
Ko te horahanga o A 1 = 10 cm 2
Ko te horahanga o A 2 = 100 cm 2
Te Kaha 2 (F 2 ) = 100 Newton
E hiahiatia ana: Kaha 1 (F 1 )
Rongoā:
P = F / A
P = pēhanga , F = kaha , A = horahanga
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. Mena ko te horahanga o A1 = 0.001 m2 me te horahanga o A2 = 0.1 m2 , ko te kaha whakauru o waho F1 = 100 N, ko te kaha whakaputa o waho F2?
Mōhiotia:
Ko te horahanga o A 1 = 0.001 m 2
Ko te horahanga o A 2 = 0.1 m 2
Te kaha whakauru o waho F 1 = 100 Newtons
E hiahiatia ana : Te kaha whakaputa o waho (F 2 )
Rongoā:
P1 =P2
F1 / TO1 =F2 / TO2
100 N / 0.001 m² = F² / 0.1 m²
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. Taumaha o te motuka = 16,000 N. He aha te kaha whakauru o waho F…
Mōhiotia:
Taumaha o te motuka (w) = 16,000 N
Te horahanga o B (A B ) = 4000 cm² = 4000 / 10,000 m² = 4 / 10 m² = 0.4 m²
Te horahanga o A (A A ) = 50 cm² = 50 / 10,000 m² = 0.005 m²
E hiahiatia ana: Force F
Rongoā:
F / A A = w / A B
F / 0.005 m² = 16,000 N / 0.4 m²
F / 0.005 = 16,000 N / 0.4
F / 0.005 = 40,000 N
F = (40,000 N)(0.005)
F = 200 Newton
4.
Ko te horahanga o A he 60 cm² , ā, ko te horahanga o B he 4,200 cm² . Tātaihia te kaha whakauru o waho o F.
Mōhiotia:
Te horahanga o A (A A ) = 60 cm 2
Te horahanga o B (A B ) = 4200 cm 2
Taumaha w (w) = 3500 Newton
E hiahiatia ana: F 1
Rongoā:
Te kaha o F i tatauhia mā te whakamahi i te whārite o te mātāpono a Pascal :
F 1 / A 1 = F 2 / A 2
F 1 / 60 henimita 2 = 3500 N / 4200 henimita 2
F 1 / 60 = 35 N / 42
F 1 = (60)(35) / 42
F 1 = 2100 / 42
F 1 = 50 Newton
5. He nui te wāhanga whakawhiti o te hiki waipēhi, ā, he iti te wāhanga whakawhiti. Ko te horahanga wāhanga whakawhiti nui he 20 ngā wā o te horahanga wāhanga whakawhiti iti. Mena ka hoatu he kaha whakauru ki te wāhanga whakawhiti iti he 25 N, kātahi ka whakatau i te kaha whakaputa.
Mōhiotia:
Horahanga whakawhiti iti (A 1 ) = A
Te horahanga whakawhiti-wāhanga nui (A 2 ) = 20A
Te kaha whakauru (F 1 ) = 25 N
E hiahiatia ana: Te kaha whakaputa (F 2 )
Rongoā:
- He aha te Mātāpono a Pascal?
- WhakautuE ai ki te mātāpono a Pascal, ko ngā huringa pēhanga katoa e pā ana ki tētahi pūwāhi o te wai ka tukuna puta noa i te wai i ngā taha katoa, kāore e heke.
- Me pēhea te mahi a te pūwero waipēhi i runga i te mātāpono a Pascal?
- WhakautuI roto i te hiki waipēhi, ka hangaia he pēhanga iti e tukuna ana ki tētahi piston rohe-iti, kāore e whakaitihia ki tētahi piston rohe-rahi. Ka hua ake he kaha nui ake ki te piston nui ake, ka taea ai e ia te hiki i ngā mea taumaha.
- He aha te take kāore te huringa pēhanga e whakaitihia ana i roto i te Mātāpono a Pascal?
- WhakautuNā te mea kāore e taea te pēhi i ngā wai, ina pēhia tētahi wāhanga o te wai, kāore e taea te pēhi, nō reira ka tukuna te huringa pēhanga ki ngā wāhanga katoa o te wai.
- He aha te pānga o te pikinga o te hohonu ki te pēhanga wai, inā whakaarohia te mātāpono a Pascal?
- WhakautuI te pikinga o te hohonutanga i roto i te wai, ka piki ake anō hoki te pēhanga nā te taumaha o te wai i runga ake nei. He rite tēnei ki te mātāpono a Pascal, nā te mea ka pāngia te pikinga pēhanga i tētahi hohonutanga motuhake.
- He aha i pāorooro ai ō tātou taringa ina piki tere, ina heke tere rānei i roto i te waka rererangi, ina ruku hohonu rānei i raro i te wai?
- WhakautuMā te tere o te hurihanga o te teitei, o te hohonu rānei ka tere te hurihanga o te pēhanga i roto i te taiao e karapoti ana (te hau, te wai rānei). Ka pāorooro ō tātou taringa hei huarahi ki te whakataurite i te pēhanga o roto ki te pēhanga o waho, e ai ki te Mātāpono a Pascal.
- Ki te pēhia he ngira hiri kāore he mirumiru hau, he aha i uaua ai te pēhi i te wai i roto?
- WhakautuKāore e taea te pēhi i ngā wai. Ina ngana koe ki te whakaiti i te rōrahi o te wai i roto i te weronga, ka piki te pēhanga, ka ātete ki te pēhanga, e ai ki te Mātāpono a Pascal.
- Me pēhea te whakamārama a te Mātāpono a Pascal i te āhuatanga o te pakaru o te tāwharau mēnā ka hangaia he kōhao iti i tōna pūtake?
- WhakautuNā te taumaha o te wai, he nui te pēhanga i te pūtake o te tāhuna. Ahakoa he iti noa te kōhao ka taea te pēhanga nui ki ngā hanganga e karapoti ana, ka arahi pea tēnei ki te pakaru kino o te tāhuna.
- He aha i māmā ake ai te pupuhi wai mai i te pounamu pēhi e tata kī ana i te pounamu e tata kau ana?
- WhakautuHe nui ake te wai o te pounamu kī tonu, ā, ina pēhia, ka pai ake te tuku i te pēhanga puta noa i te wai nā te Mātāpono a Pascal. He nui ake te hau o te pounamu tata kau, he mea ka taea te pēhi, nō reira kāore te pēhanga kotahi e whakaputa i te pupuhi wai kaha.
- I roto i ngā pūnaha waipēhi, he nui ake rānei te kaha whakaputa i te kaha whakauru i ngā wā katoa?
- WhakautuKāore e tika ana. Ko te ōwehenga o te kaha whakaputa ki te kaha whakauru ka whakatauhia e te ōwehenga o ngā horahanga o ngā piston putanga me ngā piston whakauru. Kua hangaia te pūnaha hei whakanui i te kaha mā te whai i te horahanga piston putanga nui atu i te horahanga whakauru, engari ko te ōwehenga horahanga te mea e whakatau ana i te whakanui i te kaha.
- I runga i te Mātāpono a Pascal, he aha i pakari ai, i kiato ai hoki ngā tinana o ngā mea hanga o te moana hohonu?
- WhakautuNā te taumaha o te pou wai e taupokina ana, ka pāngia ngā mea hanga o te moana hohonu e te pēhanga nui. Hei oranga mō ēnei mea hanga, kua whanake haere rātou kia pakari, kia kiato hoki ō rātou tinana ka taea te tu atu i ēnei pēhanga teitei.
