Kupanikizika kwa zinthu zolimba - mavuto ndi mayankho

Kupanikizika kwa zinthu zolimba - mavuto ndi mayankho

1. Kulemera ndi kuchuluka kwa mabuloko anayi omwe ali pansipa ndi ofanana. Kodi ndi mphamvu iti yaying'ono yomwe imachokera ku boloko pansi?

Anakonza

P = F/A

Kutengera ndi njira iyi, zatsimikiziridwa kuti kupanikizika (P) kumagwirizana mwachindunji ndi mphamvu (F) ndipo kumagwirizana mosiyana ndi malo apamwamba (A).

Mphamvu ikakhala yayikulu, mphamvu imakwera. Malo ozungulira pamwamba amakhala akulu, mphamvu imachepa.

Kutengera ndi chithunzichi, malo akuluakulu kwambiri omwe akukhudzana ndi pansi ndi chinthu chachitatu, kotero kupanikizika kwa chinthu chachitatu pansi ndi kochepa kwambiri.

2. Ngati kulemera kwa ma triangles anayi omwe ali pansipa kuli kofanana, kupanikizika kwakukulu pansi kumawonetsedwa ndi chithunzi ...

Anakonza

P = F / A = w / A

P = kupanikizika , F = mphamvu , w = kulemera , A = malo a pamwamba

Kutengera ndi njira iyi, zatsimikiziridwa kuti kupanikizika (P) kumagwirizana mwachindunji ndi mphamvu (F) ndipo kumagwirizana mosiyana ndi malo apamwamba (A).

Mphamvu ikakhala yayikulu, mphamvu imakwera . Malo ozungulira pamwamba amakhala akulu, mphamvu imachepa.

Malo ang'onoang'ono kwambiri pamwamba pake amakhala ndi kupanikizika kwakukulu.

3. Kupanikizika kwakukulu kumawonetsedwa ndi chithunzi ...

Anakonza

P = F / A = w / A

P = kupanikizika , F = mphamvu , w = kulemera , A = malo a pamwamba

Kutengera ndi njira iyi, zatsimikiziridwa kuti kupanikizika (P) kumagwirizana mwachindunji ndi mphamvu (F) ndipo kumagwirizana mosiyana ndi malo apamwamba (A).

Mphamvu ikakhala yayikulu, mphamvu imakwera . Malo ozungulira pamwamba amakhala akulu, mphamvu imachepa.

Malo ang'onoang'ono kwambiri pamwamba pake amakhala ndi kupanikizika kwakukulu.

4. Mphamvu ya 500 Newton imagwira ntchito pamwamba pa 2.5 m ^2. Dziwani kupanikizika e.

Zodziwika:

Mphamvu (F) = 500 Newton

Malo ozungulira (A) = 2.5 m ²

Kufunidwa: Kupanikizika (P)

Yankho:

Kupanikizika (P):

P = F/A

P = 500 / 2.5

P = 200 N/m ²

P = 200 Pascal

5. Kulemera kwa bokosi = 75 kg ndi kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s ^2. Dziwani kupanikizika pansi.

Zodziwika:

Kulemera (m) = 75 kg

Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s ²

Kulemera (w) = mg = (75 kg)(10 m/s ² ) = 750 kg m/s ² = 750 Newtons

Malo ozungulira (A) = mamita 6 x mamita 5 = 30 m ²

Akufuna: Kupanikizika pansi

Yankho:

P = F/A = w/A = 750/30 = 25 N/m ²

6. Kulemera kwa bokosi ndi 24 kg. Kuthamanga chifukwa cha mphamvu yokoka ndi 10 m/s ² . Dziwani kupanikizika pansi.

Zodziwika:

Kulemera (m) = 24 kg

Kuthamanga chifukwa cha mphamvu yokoka (g) = 10 m/s ²

Kulemera (w) = mg = (24 kg)(10 m/s ² ) = 240 kg m/s ² = 240 Newtons

Malo ozungulira (A) = 1 mx 0.4 m = 0.4 m ²

Akufuna: Kupanikizika pansi

Yankho:

P = F / A = w / A

P = kupanikizika , F = mphamvu , w = kulemera , A = malo a pamwamba

Kupanikizika pansi:

P = 240 N / 0.4 m ² = 600 N/m ²

1. Kodi kupanikizika ndi chiyani pankhani ya zinthu zolimba?
   • yankho: Kupanikizika kumatanthauzidwa ngati mphamvu yomwe imagwiritsidwa ntchito pa gawo lililonse. Ikagwiritsidwa ntchito pa zinthu zolimba, imatanthauza mphamvu yomwe chinthu cholimba chimagwiritsa ntchito pamalo ena ogawanika ndi malo olumikizirana.
2. Kodi malo olumikizirana amakhudza bwanji kukakamizidwa komwe chinthu cholimba chimapereka?
   • yankho: Kupanikizika komwe chinthu cholimba chimapereka kumagwirizana ndi dera lomwe chakhudzana nalo. Ngati mphamvuyo ikhalabe yofanana, kuwonjezera dera lolumikizana kudzachepetsa kupanikizika, ndipo kuchepetsa dera lolumikizana kudzawonjezera kupanikizika.
3. N’chifukwa chiyani zinthu zakuthwa monga singano ndi misomali zimalowa mosavuta pamalo?
   • yankhoZinthu zakuthwa zimakhala ndi malo ochepa kwambiri olumikizirana. Mphamvu ikagwiritsidwa ntchito, izi zimapangitsa kuti pakhale kupanikizika kwakukulu kumapeto, zomwe zimapangitsa kuti zikhale zosavuta kulowa muzinthu zina.
4. Kodi nsapato za chipale chofewa zimateteza bwanji munthu kuti asamire kwambiri m'chipale chofewa?
   • yankho: Nsapato za chipale chofewa zimagawa kulemera kwa munthu pamalo akuluakulu, zomwe zimachepetsa kupanikizika kwa chipale chofewa. Izi zimaletsa kapena kuchepetsa kumira.
5. N’chifukwa chiyani magalimoto akuluakulu ali ndi matayala akuluakulu komanso otakata kuposa magalimoto ang’onoang’ono?
   • yankhoMatayala akuluakulu komanso okulirapo amagawa katundu wolemera kwambiri wa galimoto pamalo akuluakulu, zomwe zimachepetsa kuthamanga kwa mpweya pamsewu. Izi zimathandiza kupewa kuwonongeka kwa msewu ndikupereka mphamvu yogwira ntchito bwino.
6. Kodi kupanikizika kumagwirizana bwanji ndi kuya kwa mzati wa chinthu cholimba?
   • yankhoMosiyana ndi madzimadzi, kuthamanga kwa zinthu zolimba sikumawonjezeka nthawi zonse ndi kuzama m'njira yodziwikiratu chifukwa cha mphamvu yokoka yokha. Kuthamanga kwa chinthu cholimba kumadalira kulemera kwake pamwamba pa mfundo imeneyo komanso kapangidwe kake ndi kapangidwe kake ka chinthu cholimba.
7. N’chifukwa chiyani buku lolemera silingawononge tebulo koma chinthu chosongoka cholemera pang’ono chingawononge tebulo?
   • yankho: Kupanikizika komwe chinthu chimagwiritsa ntchito ndi kulemera kwake komanso dera lomwe kulemerako kumagawidwa. Buku lolemera limagawa kulemera kwake pamalo akuluakulu, zomwe zimapangitsa kuti kupanikizika kukhale kochepa. Chinthu cholunjika, ngakhale chitakhala chopepuka, chimayika mphamvu yake pamalo ochepa kwambiri, zomwe zimapangitsa kuti kupanikizika kukhale kwakukulu, komwe kungawononge tebulo.
8. Kodi kufalikira kwa mphamvu mu zinthu zolimba kumakhudza bwanji maziko a nyumba?
   • yankho: Maziko a nyumba amagawa kulemera kwa nyumbayo pamalo akuluakulu, kuchepetsa kupanikizika pansi. Kugawa bwino kwa kupanikizika kumaonetsetsa kuti nyumbayo siima kapena kupendekeka chifukwa cha kusakhazikika bwino.
9. N’chifukwa chiyani nsapato zazitali nthawi zambiri zimasiya mabowo pamalo ofewa?
   • yankho: Zidendene zazitali zimaika kulemera kwa wovala pamalo ochepa kwambiri, zomwe zimapangitsa kuti munthu ayambe kupanikizika kwambiri pamalo okhudzidwa. Pamalo ofewa, kupanikizika kwakukulu kumeneku kungayambitse ziphuphu kapena mabala.
10. Ngati mutakankhira dzanja lanu kukhoma, bwanji silimira pakhoma ngati mmene lingachitire ndi chinthu chofewa?

• yankho: Kapangidwe ka khoma ndi zinthu zake zimalimbana ndi kusintha kwa kutentha, ngakhale pamene dzanja lanu likugwiritsa ntchito mphamvu. Ngakhale kuti dzanja lanu likukakamiza pakhoma, zinthu zomwe zili pakhoma ndi zolimba komanso zolimba mokwanira kuti zisavutike ndi kutentha, zomwe zimathandiza kuti dzanja lanu lisamire.