Misalai 4 na tambayoyin jirgin sama masu karkata zuwa SMP
1. Kalli hoton da ke ƙasa!
Ana jawo keken hawa mai nauyin N 10 daga ƙasan jirgin sama mai karkata har sai ya kai saman jirgin sama mai karkata. Girman ƙarfin F da ake buƙata shine…
A. 15,0 N
B. 12,5 N
C. 5,0 N
D. 2,5 N
Tattaunawa
An san cewa:
Nauyin keken trolley (w) = 10 Newton
Tsawon jirgin da aka karkata = mita 2
Tsayin jirgin da aka karkata = mita 0,5
θ = kusurwa tsakanin jirgin sama mai faɗi da jirgin sama mai karkata
Sin θ = 0,5/2 = 0,25
Tambaya: Girman ƙarfin F
Amsa:
w x shine ɓangaren nauyin trolley wanda yake daidai da jirgin da aka karkata
w y shine ɓangaren nauyin trolley wanda yake daidai da jirgin da aka karkata
Domin a ja keken hawa sama, ƙarfin jan F dole ne ya zama aƙalla daidai da w x.
w x = w sin θ = (10 Newton)(0,25) = 2,5 Newton
Don haka ƙarfin tensile F = 2,5 Newton
Amsar da ta dace ita ce D.
2.
Za a ɗaga wani abu da aka yi da tubalin katako mai santsi a kan wani wuri mai santsi kamar yadda aka nuna a hoton. Idan nauyin tubalin ya kai kilogiram 6, g = 10 m/s2, to girman ƙarfin turawa don ɗaga tubalan daga P zuwa Q shine…
A. 36 Newtons
B. 24 Newtons
C. 20 Newtons
D. 12 Newtons
Tattaunawa
Berat haske: w = mg = (6)(10) = kg 60 m/s2 = 60 Newton
Tubalan masu santsi da kuma jiragen da suka karkace suna da santsi don haka ana ɗaukar su ba su da wata matsala. gogayyaDomin a motsa tubalin sama, dole ne ƙaramin ƙarfin turawa ya zama daidai da ɓangaren nauyin tubalin da ke daidai da matakin da aka karkata, wato wx.
wx = w sin teta = (w) (gefen gaba/hypotenuse)
wx = (60)(20/60) = (60)(1/3) = Newtons 20
Amsar da ta dace ita ce C.
3.
Ma'aikaci yana son ya motsa akwati a kan babbar mota mai nauyin Newtons 500 ta amfani da jirgin sama mai karkata kamar yadda aka nuna a hoton da ke ƙasa. Idan babbar motar tana da tsayin mita 1,5, nawa ne ƙarfin da ake buƙata don motsa akwatin?
A. 125 N
B. 250 N
C. 500 N
D. 1500 N
Tattaunawa
Nauyin akwati (w) = 500 Newton
Domin a motsa akwatin sama, dole ne ƙaramin ƙarfin turawa ya zama iri ɗaya da ɓangaren nauyin akwatin da ke daidai da matakin karkata, wato wx.
wx = w sin teta = (w) (gefen gaba/hypotenuse)
wx = (500)(1,5/3) = (500)(1/2) = Newtons 250
Amsar da ta dace ita ce B.
4.
Za a ɗaga kayan aiki masu nauyi ta amfani da katako a matsayin jirgin sama mai karkata, kamar yadda aka nuna a cikin hoton da ke ƙasa. Domin tabbatar da cewa ƙarfin ɗagawa shine rabin ainihin nauyin akwati, katako mai tsawon...
A. 5,0 m
B. 7,5 m
C. mita 10,0
D. 12,5 m
Tattaunawa
Nauyin akwatin = w
Domin a motsa akwatin sama, dole ne ƙaramin ƙarfin turawa ya zama daidai da ɓangaren nauyin akwatin da ke daidai da matakin karkata, wato wxDomin girman ƙarfin turawa ya ninka nauyin akwatin sau 0,5, tsawon allon shine…
wx = w babu
wx = (w)(gefen gaba/hauhawar jini)
0,5 (w)= (w)(2,5/x)
0,5 = (2,5/x)
x = 2,5/0,5 = mita 5
Amsar da ta dace ita ce A.
Tushen tambaya:
Tambayoyin Jarrabawar Ƙasa ta Kimiyya ta Makarantar Sakandare/Makarantar Sakandare ta Musulunci
