3 Zitsanzo za mafunso oyenda molunjika mmwamba
1. Mpira umaponyedwa molunjika mmwamba ndi liwiro loyambirira la 20 m/s. Dziwani kutalika kwakukulu kwa mpirawo. g = 10 m/s2
Zokambirana
Mu kuyenda molunjika mmwamba, chinthu chikakwera mmwamba, chimatsika, ndipo chikabwerera pansi, chimathamanga. Chifukwa chake, kuyenda molunjika mmwamba ndi chitsanzo cha GLBB.
Fomula ya GLBB :
vt =vo + pa
s = vo t + ½ pa2
vt2 =vo2 + ma axle awiri
3 Zitsanzo za mafunso okhudza kuyenda molunjika pansi
1. Mpira umaponyedwa molunjika pansi kuchokera ku nyumba yokhala ndi zipinda zambiri yokhala ndi liwiro loyamba la 10 m/s ndipo umafika pansi patatha masekondi awiri. Kodi liwiro la mpirawo ndi lotani ukagunda pansi? g = 10 m/s2
Zokambirana
Amadziwika kuti:
vo = 10 m/s
t = sekondi imodzi
g = 10 m/s2
Anafunsa kuti:
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).