Zitsanzo 9 za Mafunso Okhazikika
Phunzirani mfundo zokhudza malamulo a Newton , mphamvu yachibadwa ndi mphamvu yokangana kuti mumvetse bwino nkhani ya funsoli.
1. Chipolopolo cha 5 kg chimatulutsidwa pamalo osalala monga momwe zasonyezedwera pachithunzichi! (g = 10 ms −2 ndi tg 37 o = 3/4). Kuthamanga kwa chipolopolocho ndi...
A. 4,5 ms-2
B. 6,0 ms −2
C. 7,5 ms −2
D. 8,0 ms −2
E. 10,0 ms −2
Zokambirana
1. Block A yokhala ndi kulemera kwa 5 kg imayikidwa pamalo osalala, block B yokhala ndi kulemera kwa 3 kg imapachikidwa ndi chingwe ndikulumikizidwa ku block A kudzera mu pulley, ngati g = 10 m/s 2 dziwani kuthamanga kwa block!
A. 3,50 m/s2
B. 3,75 m/s 2
C. 4,00 m/s 2
D. 5,00 m/s 2
E. 5,25 m/s 2
Zokambirana
1. Ngati mphamvu yochokera pa chinthu ndi yofanana ndi zero, ndiye kuti...
(1) chinthucho sichidzafulumira
(2) zinthu nthawi zonse zimakhala pamtendere
(3) kusintha kwa liwiro la chinthucho ndi zero
(4) n'zosatheka kuti chinthu chiyende molunjika pa liwiro losasintha
Chowonadi ndi chakuti ...
Zitsanzo 4 za Mafunso a Centripetal Force
1. Chinthu cholemera magalamu 200 chimamangiriridwa ku chingwe chopepuka kenako n’kuzunguliridwa mopingasa ndi liwiro lokhazikika la 5 rad s –1 , monga momwe chithunzi chotsatirachi chikusonyezera. Ngati kutalika kwa chingwe ndi l = 60 cm, ndiye kuti kukula kwa mphamvu yapakati pa chinthucho ndi…
A. 0,3 N
B. 0,6 N
C. 3 N
D. 6 N
E. 30 N
Zokambirana
1. Chipolopolo chimawomberedwa pa liwiro la 20 ms –1 . Ngati ngodya yokwezeka ndi 60 o ndipo kuthamanga chifukwa cha mphamvu yokoka = 10 ms –2 , ndiye kuti chipolopolocho chimafika pamalo ake apamwamba kwambiri pambuyo pa…
A. Masekondi 1
B. Masekondi awiri
C. √ Masekondi atatu
D. 2√3 masekondi
E. 3√2 masekondi
Zokambirana
1. Chinthu cholemera makilogalamu 10 ndikuyenda kozungulira kofanana pa liwiro la 4 ms-1Ngati utali wozungulira wa bwalo ndi mamita 0,5, ndiye kuti:
(1) Mafupipafupi ozungulira ndi 4/π Hz
(2) Kuthamanga kwapakatizake 32 ms-2
(3) Mphamvu yapakati ndi 320 N
(4) Nthawi ndi 4π s.
Chiganizo cholondola ndi chakuti…
1. (1), (2), (3), ndi (4)
2. (1), (2), ndi (3)
3. (1), ndi (3) zokha
4. (2), ndi (4) zokha
5. (3), ndi (4) zokha
Zokambirana
1. Mawilo awiri A ndi B alumikizidwa ndi riboni (onani chithunzi). Ngati radius ya A ndi radius yowirikiza kawiri ya B, ndiye kuti chomwe chimachitika ndi...
A. vA = 2 vB
B. vA = 1/2 vB
C. vA = vB
D. ωA = ωB
E. ωA = 2 ωB
Zokambirana
1. Kuchokera pa graph pamwambapa, chomwe chikuwonetsa chinthu chomwe chili pamalo pake ndi...
A. (1)
B. (2)
C. (3)
D. (4)
E. (5)
Zokambirana
Chinthu chomwe chili pamalo pake chimasonyezedwa ndi mzere wopingasa womwe uli wolunjika ku mzere wa mtunda (s). Mzere wowongoka uwu umasonyeza kuti mtunda umakhalabe wofanana pamene nthawi ikuwonjezeka.
Yankho lolondola ndi C.
1. M'mawa uliwonse, Hadi nthawi zonse amathamanga mozungulira bwalo la mamita 100 x 400 nthawi 12 mu ola limodzi. Liwiro lapakati ndipo liwiro lapakati la kayendedwe ka Hadi ndi...
A. 0 km/h ndi 12 km/h
B. 0 km/h ndi 6 km/h
C. 6 km/ola ndi 12 km/ola
D. 6 km/h ndi 6 km/h
E. 12 km/h ndi 12 km/h
Zokambirana
1. Fitria anayenda ulendo wotsatira mapazi ake kuyambira pa mfundo A mpaka pa mfundo B: 600 m kumpoto; mpaka pa mfundo C 400 m kumadzulo; mpaka pa mfundo D 200 m kum'mwera; kenako n’kutha pa mfundo E 700 m kum’mawa. Kukula kwa kusamuka komwe Fitria anakumana nako ndi….
A. 100 m
B. 300 m
C. 500 m
D. 1500 m
E. 1900 m
Zokambirana