Muenzaniso wemibvunzo yendege inotsvedza yechikoro chesekondari chevana vadiki

4 Mienzaniso yemibvunzo yeSMP inotsvedza

1. Tarisa mufananidzo unotevera!

Trolley inorema 10 N inodhonzwa kubva pasi peplane yakakotama kuenda pamusoro peplane yakakotama. Hukuru hwesimba F rinodiwa ndi…

A. 15,0 N

B. 12,5 N

C. 5,0 N

D. 2,5 N

Kukurukurirana

Zvinozivikanwa kuti:

Kurema kwetrolley (w) = 10 Newton

Kureba kwendege yakatsamira = mamita maviri

Kureba kwendege yakatsamira = 0,5 metres

θ = kona iri pakati pendege yakati sandara nendege yakatsamira

Chivi θ = 0,5/2 = 0,25

Mubvunzo: Hukuru hwesimba F

Mhinduro:

w _x chikamu chehuremu hwetrolley chakafanana nendege yakatsamira

w _y chikamu chehuremu hwetrolley chakatarisana nendege yakatsamira

Kuti trolley ikwidzwe, simba rekudhonza F rinofanira kunge rakaenzana ne w _x.

w _x = w sin θ = (10 Newton)(0,25) = 2,5 Newton

Saka simba rekudhonza F = 2,5 Newton

Mhinduro chaiyo ndiD.

2.

Chinhu chakagadzirwa nedanda rakatsetseka chichasimudzwa panzvimbo yakatsetseka sezviri kuratidzwa mumufananidzo. Kana huremu hwedanda iri 6 kg, g = 10 m/s², saka hukuru hwesimba rinosundidzira kusimudza bhuroko kubva paP kuenda kuQ ndi…

A. 36 Newtons
B. 24 Newtons
C. 20 Newton
D. 12 Newton

Kukurukurirana

Berat danda: w = mg = (6)(10) = 60 kg m/s² = 60 Newton
Mabhuroko akatsetseka uye mapuranga akatsvedza akatsetseka saka anoonekwa seasina kukweshana. gesekanKuti bhokisi rikwidzwe kumusoro, simba rekusundidzira diki rinofanira kuenzana nechikamu chehuremu hwebhokisi chakaenzana nendege yakatsamira, kureva w_x.
w_x = w sin teta = (w)(kurutivi rwemberi/hypotenuse)
w_x = (60)(20/60) = (60)(1/3) = 20 Newtons
Mhinduro chaiyo ndiC.

3.

Mushandi anoda kutakura bhokisi akariisa parori rinorema maNewton mazana mashanu achishandisa plane yakakotama sezvakaratidzwa mumufananidzo uri pazasi. Kana rori iri kureba kwemamita 1,5, simba rakawanda sei rinodiwa kuti bhokisi ritamiswe?

A. 125 N
B. 250 N
C. 500 N
D. 1500 N

Kukurukurirana
Kurema kwebhokisi (w) = 500 Newton
Kuti bhokisi rifambiswe kumusoro, simba rekusundidzira rishoma rinofanira kunge rakafanana nechikamu chegiravhiti rebhokisi rakafanana nendege yakatsamira, kureva w_x.
w_x = w sin teta = (w)(kurutivi rwemberi/hypotenuse)
w_x = (500)(1,5/3) = (500)(1/2) = 250 Newtons
Mhinduro chaiyo ndeiyi B.

4.
Chishandiso chinorema chinofanira kusimudzwa uchishandisa puranga rakarerekera, sezvinoratidzwa mumufananidzo unotevera. Kuti ive nechokwadi chekuti simba rekusimudza riri hafu yehuremu chaihwo hwebhokisi, puranga rine hurefu hwe...
A. 5,0 m
B. 7,5 m
C. 10,0 m
D. 12,5 m
Kukurukurirana
Kurema kwebhokisi = w
Kuti bhokisi rifambiswe kumusoro, simba rekusundidzira rishoma rinofanira kuenzana nechikamu chegiravhiti rebhokisi rakafanana nendege yakatsamira, kureva w_xSaka kuti hukuru hwesimba rinosunda hupfuure huremu hwebhokisi ne0,5, kureba kwebhodhi kwakafanana…
w_x = w sin teta
w_x = (w)(kurutivi rwemberi/hypotenuse)
0,5 (w)= (w)(2,5/x)
0,5 = (2,5/x)
x = 2,5/0,5 = mamita mashanu
Mhinduro chaiyo ndiA.

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