Nkhani za fizikisi zokhudza zochitika zachilengedwe ndi zina zotero zokhudzana ndi fizikisi.
Zitsanzo 16 za Mafunso Okhudza Kuyenda Kwaulere kwa M'dzinja.
1. Chipatso cha kokonati chimachoka pa tsinde ndipo chimafika pansi patatha masekondi atatu. Kodi liwiro la kokonati likafika pansi ndi lotani? g = 10 m/s2
Zokambirana
Ndizodziwika kuti :
t = sekondi imodzi
g = 10 m/s2
Anafunsa :
4 Zitsanzo za kuchuluka komwe kunachokera, kuchuluka kwa mayiko ndi mayunitsi
| Kuchuluka kochokera | Fomula | Kodi ndalama yaikulu ndi chiyani? | Miyeso ya kuchuluka komwe kwachokera | Dongosolo Lapadziko Lonse la Mayunitsi Kuchuluka Kochokera |
| Luwas | Utali x m'lifupi | Utali (2) | [L2] | m2 |
| Kuchuluka kwa cuboid | Kutalika x m'lifupi x kutalika | Utali (3) | [L3] | m3 |
| Kuchulukana | Kulemera / Kuchuluka | Kulemera (1), kutalika (3) | [M] / [L]3] = [M][L-3] | Kg / m3 |
| Kecepatan | Mtunda / nthawi | Kutalika (1), nthawi (1) | [L] / [T] = [L] [T]-1] | m / s |
| Kuthamanga | Liwiro / nthawi | Kutalika (1), nthawi (2) | [L] [T]-1] / [T] = [L] [T]-2] | m / s2 |
| Gaya | Kuchuluka kwa kulemera x kuthamanga | Kulemera (1), kutalika (1), nthawi (2) | [M][L][T-2] | Kg m/s2 |
| Bizinesi | Kusuntha kwa mphamvu x | Kulemera (1), kutalika (2), nthawi (2) | [M][L][T-2][L] = [M][L2][T-2] | Kg m2/s2 |
Kuti mudziwe kuchuluka kwa zinthu zofunika, choyamba tengani fomula ya kuchuluka komwe kwachokera.
Malangizo a Archimedes pa kuyesa malamulo
Cholinga cha kuyesa malamulo kwa Archimedes:
- Ophunzira akhoza kuyeza kuchuluka ndi kulemera kwa madzi omwe achotsedwa ndi chinthu chomwe chamira m'madzi.
– Ophunzira amatha kudziwa ndikumvetsa lamulo la Archimedes
Zida ndi zipangizo:
– Chidebe chapakati (1)
– Chidebe chaching'ono (1)
– Dynamometer (1)
– Katundu (1)
Zitsanzo 6 za Mafunso a Archimedes a Malamulo
1. Kodi ndi kuchuluka kotani kwa mwala komwe kumayikidwa m'madzi a m'nyanja ngati kulemera kwa madzi a m'nyanja komwe kwachotsedwa ndi mwalawo ndi 2 Newtons? Kuchuluka kwa madzi a m'nyanja = 1025 kg/m23.
Zokambirana
Zitsanzo 5 za mafunso okhudza kuyenda
1. Kulemera kwa katundu mumlengalenga ndi 3 N, kulemera kwa katundu m'madzi ndi 2,8 N. Kodi madziwo amagwiritsa ntchito mphamvu yochuluka bwanji pa katunduyo?
Kukambirana:
Kumvetsetsa Chilamulo cha Pascal
Kodi jeki/lift ya hydraulic imagwira ntchito bwanji ikagwiritsidwa ntchito kukweza galimoto? Kodi mabuleki a hydraulic amagwira ntchito bwanji akagwiritsidwa ntchito kuchepetsa galimoto?
Monga momwe tinaphunzirira mu mutu wa Fluid Pressure , madzi aliwonse amakankhira zinthu zonse zomwe zimakhudzidwa nazo. Madzi omwe timayika mu galasi amakankhira makoma a galasi. Mofananamo, tikasamba mu dziwe losambira kapena m'madzi a m'nyanja, madziwo amakankhira thupi lathu lonse.
Zitsanzo 9 za Chilamulo cha Pascal
1. Malo ozungulira a jack iliyonse ya hydraulic ndi 0,04 m2 ndi 0,10 m2Ngati mphamvu yolowera ndi 5 Newtons, kodi mphamvu yotulutsira yayikulu ndi iti?
Kukambirana:
Amadziwika kuti:
A1 = 0,04 m2
A2 = 0,10 m2
F1 = 5 n
Anafunsa: F2 ?
Yankho:
Mu phunziro lapitalo la fizikisi, tinaphunzira mitu ya mphamvu za tinthu ndi mphamvu zozungulira . Mu mphamvu za tinthu, tinaphunzira tinthu mu kayendedwe komasulira ( kuyenda kozungulira , kuyenda kozungulira , kuyenda kwa parabolic ). Mu mphamvu zozungulira, tinaphunzira matupi olimba ozungulira. Mu mutu uwu, tinaphunzira zinthu mu mgwirizano. Pali mitundu iwiri ya mgwirizano, womwe ndi mgwirizano wokhazikika ndi mgwirizano wosinthasintha. Malinga ndi lamulo loyamba la Newton, chinthu chimakhala mu mgwirizano wokhazikika ngati chinthucho chili pamalo opumulira ndipo chinthu chili mu mgwirizano wosinthasintha ngati chinthucho chikuyenda pa liwiro lokhazikika. Pepalali likuyang'ana kwambiri pakukambirana za mgwirizano wokhazikika (zinthu zokhazikika).
Mphamvu zozungulira ndi nthambi ya makina omwe amaphunzira kayendetsedwe ka kuzungulira komwe kumakhudza mphamvu, misa, ndi zinthu zina zomwe zimakhudza kayendetsedwe ka kuzungulira. Chinthu chimazungulira ngati ziwalo zonse za chinthucho zikuyenda mozungulira mzere kapena pivot yomwe ili pa gawo limodzi la chinthucho. Kuyenda kozungulira komwe kwaphunziridwa pamutuwu kumayang'ana kwambiri kayendetsedwe ka kuzungulira mozungulira mzere wokhazikika. Kuyenda kwa pulley, fan, kuyenda kwa CD/DVD mu chipinda cha CD/DVD , kuyenda kwa chitseko kapena zenera, kuyenda kwa silinda ya injini, helikopita kapena propeller ya ndege, kapena propeller ya sitima ndi zitsanzo zina za kuyenda kozungulira mozungulira mzere wokhazikika. Kodi mudawonapo pamwamba pozungulira? Malo a mzere wa pamwamba pozungulira nthawi zonse amasintha (kupendekeka kwa pamwamba kumasintha), chifukwa chake kuyenda kozungulira monga komwe kumachitikira pamwamba pozungulira sikuphunziridwa pamutuwu.
Kumvetsetsa Mfundo za Anthu Akuda
Ngati tisakaniza madzi otentha ndi ozizira mu chidebe chotseguka (monga chidebe), kutentha kumasamuka kuchoka pamadzi otentha kupita ku madzi ozizira. Chifukwa chidebecho chili chotseguka, kutentha kwina kumasamuka kupita mumlengalenga. Chidebecho chimafundanso. Kutentha komwe kumatulutsidwa ndi madzi otentha sikumangotengedwa ndi madzi ozizira komanso ndi mpweya ndi chidebecho. Pankhaniyi, chidebecho sichimayikidwa paokha.
Tikasakaniza madzi otentha ndi ozizira mu thermos yotsekedwa, kutentha kumasamutsidwa kuchokera ku madzi otentha kupita ku madzi ozizira. Thermos ndi dongosolo lokhalokha , kotero kutentha sikusamutsidwa kupita ku mpweya kapena thermos. Kutentha komwe kumatulutsidwa ndi madzi otentha kumangotengedwa ndi madzi ozizira mpaka chisakanizocho chifike pamlingo wofanana ndi kutentha.