3 Tusaalooyin su'aalo cufisjiidadka ah
1. Shay wuxuu leeyahay cufnaan dhan 1 kg. Haddii dardargelinta cufisjiidadka awgeed ay tahay 10 m/s2, intee le'eg ayuu miisaamaa shaygu?
Dood
Waa la garanayaa :
Cufka shayga (m) = 1 kg
Dardargelinta cufisjiidadka awgeed (g) = 10 m/s2
La weydiiyay Miisaanka shayga (w)
Jawab :
Qaacidada cufisjiidadka:
w = mg
Macluumaadka:
m = cufnaan (cutub caalami ah waa kiilogaraam, oo la soo gaabiyey kg)
g = dardargelinta cuf-isjiidadka awgeed (cutubyada caalamiga ah waa mitir ilbiriqsi kasta oo laba jibbaaran, oo la soo gaabiyey m/s2)
w = cuf-isjiidadka (cutubyada caalamiga ah waa kg m/s2 (oo sidoo kale loo yaqaan Newton)
Miisaanka shayga waa:
w = (1 kg)(10 m/s2) = 10 kg m/s2 = 10 Newton
2. Eeg sawirrada (a) iyo (b) ee hoose.
(a) Sawir vector-ka cufisjiidadka shayga, sawirka (a).
(b) Sawir vektorka cufisjiidadka, qaybta vektorka cufisjiidadka oo barbar socda diyaaradda u janjeerta iyo qaybta vektorka cufisjiidadka oo ku toosan diyaaradda u janjeerta, sawirka (b)!
Dood
Jihada cufisjiidadka (w) waa mid toosan oo hoos u socota ama toosan oo u jeedda bartamaha dhulka.
wx = qaybta toosan ee cufisjiidadka iyo wy = qayb toosan oo ka mid ah cufisjiidadka.
3. Haddii cufka shayga = 1 kg iyo dardargelinta ay sabab u tahay cuf-isjiidadka = 10 m/s 2 , go'aami (a) baaxadda xoogga cuf-isjiidadka (b) baaxadda qaybta vector-ka xoogga cuf-isjiidadka ee barbar socda diyaaradda u janjeerta iyo baaxadda qaybta vector-ka xoogga cuf-isjiidadka ee ku toosan diyaaradda u janjeerta
Dood
Baaxadda xoogga cufisjiidadka:
w = mg = (1 kg)(10 m/s2) = 10 kg m/s2 = 10 Newton
Baaxadda qaybta xoogga cufisjiidadka ee barbar socda diyaaradda janjeedhsan:
wx = w sin 30o = (10 N)(0,5) = 5 Newton
Baaxadda qaybta xoogga cufisjiidadka ee ku toosan diyaaradda u janjeerta:
Wy = w cos 30o = (10 N)(0,5√3) = 5√3 Newtons
[Ingiriis: Cufnaanta iyo miisaanka - dhibaatooyinka iyo xalalka ]
