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:
16 Mafunso a Zitsanzo 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 Oyesera Lamulo la Archimedes
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)
6 Mafunso a Zitsanzo Lamulo la Archimedes
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
Mafunso 5 a chitsanzo kuyandama
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 taphunzirira mu mutu waukulu Kupanikizika kwa MadziMadzi aliwonse amakankhira zinthu zonse zomwe zimakhudzidwa nazo. Madzi omwe amaikidwa mugalasi amakankhira makoma agalasi. Mofananamo, tikasambira 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 sayansi ya zakuthambo, mutu waukulu unaphunziridwa. mphamvu ya tinthu dani mphamvu zozunguliraMu kayendedwe ka tinthu tating'onoting'ono timaphunzira tinthu tating'onoting'ono tomwe timasinthasintha (kuyenda molunjika, kuyenda kozungulira, kuyenda kwa parabolic). Mu kayendedwe ka kayendedwe ka zinthu, timaphunzira matupi olimba ozungulira. Munkhaniyi, timaphunzira zinthu molingana ndi mgwirizano. Pali mitundu iwiri ya mgwirizano: mgwirizano wokhazikika ndi mgwirizano wokhazikika. Malinga ndi lamulo loyamba la Newton, chinthu chimakhala mu mgwirizano wokhazikika ngati chili pa mpumulo, ndipo chinthu chimakhala mu mgwirizano wokhazikika ngati chikuyenda pa liwiro losasintha. Pepalali likuyang'ana kwambiri pakukambirana za mgwirizano wokhazikika (zinthu zili pa mpumulo).
