6 Muchina uri nyore (Inclined plane Lever) - Matambudziko nemhinduro
1.
Ndeipi ndege yakakotama ine mukana wakafanana wemakanika
A. (1) na (2)
B. (1) uye (3)
C. (2) na (3)
D. (2) uye (4)
mhinduro
Ndege yakatsamira ndeimwe yemichina iri nyore. Michina yakatsamira zvishandiso zvinobatsira vanhu kuita basa. Ndege yakatsamira inoshandiswa kuita kuti zvive nyore kuti vanhu vasimudze chinhu kusvika pakakwirira.
Chinhu chakanaka chemuchina wendege yakatsamira ndechekuenzanisa kureba kwenzvimbo yakatsamira nekukwirira kwenzvimbo yakatsamira.
Kubatsira kwemuchina wendege yakatsamira 1 = 50 cm / 30 cm = 5/3
Kubatsira kwemuchina wendege yakatsamira 2 = 5 cm / 4 cm = 5/4
Kubatsira kwemuchina wendege yakatsamira 3 = 50 cm / 40 cm = 5/4
Kubatsira kwemuchina wendege yakatsamira 4 = 5 cm / 3 cm = 5/3
2.
Kureba AB = BC = CD = DE, sarudza simba rekupinda rinofanira kupihwa panzvimbo E kuitira kuti lever ive yakaenzana.
Zvinozivikanwa:
AB = BC = CD = DE = l
Daro riri pakati pesimba rinobuda nechikamu chakazara ( a ) = l
Daro riri pakati pesimba rekupinda nechikamu chesimba ( b ) = 3l
Simba rinobuda (w) = 900 Newton
Kudiwa : Simba (F)
Solution:
Kubatsira kwemuchina:
MA = b / a = 3l/l = 3
Hukuru hwesimba:
MA = w / F
F = w / MA
F = 900 Newtons / 3
F = 300 Newton
3.
Kuti lever ienzaniswe, sarudza hukuru hwesimba rayo rekupinda.
mhinduro
Sarudza daro riri pakati pesimba rekupinda nechikamu chechikamu ( b )
Zvinozivikanwa:
Daro riri pakati pesimba rekubuda uye fulcrum ( a ) = 25 cm
Simba rinobuda (w) = 480 Newton
Simba rekuisa (F) = 160 N
Zvinodiwa: Daro riri pakati pesimba rekupinda nechikamu chesimba (b)
Solution:
Kubatsira kwemuchina:
MA = w / F = 480 N / 160 N = 3
Daro riri pakati pesimba rekupinda nechikamu chesimba (b)
MA = b / a
3 = b / 25 cm
b = (3)(25 cm)
b = 75 cm
Tsvaga hukuru hwesimba (F)
Zvinozivikanwa:
Daro riri pakati pesimba rinobuda nechikamu chakazara ( a ) = 25 cm – 10 cm = 15 cm
Kurema kwechinhu (w) = 480 Newtons
Daro riri pakati pesimba rekupinda nechikamu chechikamu ( b ) = 75 cm
Zvinodiwa: Simba rekuisa (F)
Solution:
Kubatsira kwemuchina:
MA = b / a
MA = 75 cm / 15 cm
MA = 5
Hukuru hwesimba (F):
MA = w / F
F = w / MA
F = 480 Newtons / 5
F = 96 Newton
Kuti lever ive panzvimbo yakaenzana, simba rekupinda rinoderedzwa 64 Newton (160 N - 96 N).
4. Chiyero chehurefu hwa a na b mumufananidzo uri pazasi ndeche a: b = 1: 2.2. Kukosha kushoma kwesimba F rekusimudza chinhu B nehuremu hwe330 Newtons ndi…. Newton
A. 100
B. 150
C. 2200
D. 7260
Zvinozivikanwa:
Daro riri pakati pesimba rinobuda nechikamu chechikamu ( a ) = 1
Daro riri pakati pesimba rekupinda uye fulcrum (b) = 2.2
Kurema (w) = 330 Newton
Zvinodiwa: Simba rekuisa (F)
Solution:
Zvakanakira zvemuchina we lever:
MA = w / F = b / a
MA = mukana wekugadzira zvinhu , w = huremu, F = simba rekuisa, b = daro riri pakati pesimba rekuisa nechikamu chakakwana, a = daro riri pakati pesimba rekuisa nechikamu chakakwana
w / F = b / a
330 / F = 2.2 / 1
330 / F = 2.2
330 / 2.2 = F
F = 150 Newton
Mhinduro chaiyo ndeiyi B.
5. Mudzidzi anosunda chinhu nesimba raF kubva panzvimbo A kuenda panzvimbo B, sezvakaratidzwa mumufananidzo uri pazasi. Kana kukweshana kuri pakati pechinhu nenguruve kukasatariswa, sarudza mukana wekugadzira.
A. 4
B. 5/3
C. 5/4
D. ¾
Zvinozivikanwa:
Kureba kwenzvimbo yakatsamira (y) = mamita mana - mamita 1 = mamita matatu
Kureba kwendege yakatwasuka (x) = mamita mana
Zvinodiwa: Kubatsira kwemuchina (MA)
Solution:
Verenga hurefu hwendege yakatsamira uchishandisa equation yaPythagoras :
R = √3 2 +4 2 = √9+16 = √25 = mamita mashanu
Zvakanakira zvemuchina zvendege yakatsamira:
KM = R / y
KM = mamita mashanu / mamita matatu
KM = 5/3
Mhinduro chaiyo ndeiyi B.
6. Kubatsira kwemuchina we lever kunogona kuwedzerwa ne…
A. Pfupisa nzira yekurerekera
B. kuwedzera kona yekurerekera
C. kuderedza kona yekurerekera
D. inoderedza simba rinoshandiswa kufambisa zvinhu
Solution:
Kuenzanisa kwekubatsira kwemuchina kwendege yakatsamira:
Kubatsira kwemuchina = kureba kwendege yakatsamira/kukwirira kwendege yakatsamira
– Kubatsira kwemuchina kunoenderana nehurefu hwendege yakakotama uye nekudaro mukana wemuchina unowedzera kana hurefu hwendege yakakotama hukawedzerwa.
– Kubatsira kwemuchina kunoenderana nekukwirira kwendege yakakombama, saka, mukana wemuchina unodzikira kana kukwirira kwendege yakakombama kwakawedzerwa uye mukana wemuchina ukawedzerwa kana kukwirira kwendege yakakombama kwadzikira.
- Kana kona ikaderedzwa, kukwirira kwenzvimbo yakatsamira kunodzikira. Kubudirira kwemuchina kunowedzerwa kana kukwirira kwenzvimbo yakatsamira kukadzikira. Saka kana kona ikaderedzwa, mukana wemuchina unowedzerwa.
Kana kona ikakura, kukwirira kwenzvimbo yakatsamira kunowedzera. Kubudirira kwemuchina kunoderera kana kukwirira kwenzvimbo yakatsamira kukawedzera. Saka kana kona ikakura, mukana wemuchina unoderera.
Mhinduro chaiyo ndeinoti C.
