Tusaale ahaan ku dabaqidda sharciyada Newton meel qallafsan (waxaa jira is jiidjiid)

2 tusaale oo ku saabsan sida sharciyada Newton loogu dabaqo diyaaradaha qallafsan (waxaa jira is jiidjiid)

1. Cufka baloogga waa 2 kg, dardargelinta cufisjiidadka awgeed = 10 m/s², isku-dhafka is-khilaafka taagan iyo kan-kinetic waa 0,2 iyo 0,1. Balooggu ma wali mise wuu socdaa? Haddii balooggu uu dhaqaaqayo, go'aami (a) xoogga ka dhasha ee dardargeliya baloogga (b) baaxadda iyo jihada dardargelinta baloogga!
Dood
Waa la garanayaa :
Cuf (m) = 2 kg
Dardargelinta cufisjiidadka awgeed (g) = 10 m/s²
Isku-dhafka is-khilaafka taagan = 0,2
Isku-dhafka is-khilaafka taagan = 0,1
Miisaanka baloogga (w) = mg = (2)(10) = 20 Newton
w_x = w sin 30^o = (20)(0,5) = 10 Newton
w_y = w cos 30^o = (20)(0,5√3) = 10√3 Newtons
Xoogga caadiga ah (N) = w_y = 10√3 Newton
Xoogga is-jiidjiid ee taagan (f)_s) = (0,2)(10√3) = 2√3 Newtons
Xoogga is-khilaafka kinetic-ga (f)_k) = (0,1)(10√3) = √3 Newtons
La weydiiyay : Balooggu ma wali mise wuu socdaa? Haddii uu dhaqaaqayo, go'aami xoogga ka dhasha ee dardargeliya baloogga iyo dardargelinta baloogga!

Jawab :
Balooggu wuu nasanayaa haddii w_x < f_s, balooggu wuu dhaqaaqaa haddii w_x > f_sSababtoo ah w_x = 10 Newton iyo f_s = 2√3 Newtons, marka waxaa la soo gabagabeynayaa in balooggu uu hoos u socdo.
(a) xoogga ka dhasha ee dedejiya xannibaadda
Marka balooggu dhaqaaqo, xoogga is jiidjiidka ee ka shaqeeya baloogga waa xoogga is jiidjiidka ee kinetic-ga (f)._k).
(b) baaxadda iyo jihada dardargelinta baloogga
Baaxadda xawaaraha baloogga waa 4,15 m/s² jihada dardargelinta balooggana waa hoos.

2. Cufka baloogga waa 4 kg, dardargelinta cufisjiidadka awgeed waa 10 m/s². Isu-dheellitirka is-jiidjiidka taagan iyo kan kinetic-ga waa 0,4 iyo 0,2. Haddii baaxadda xoogga F ay tahay 40 Newton, balooggu ma wali mise wuu socdaa? Haddii balooggu uu dhaqaaqayo, go'aami (a) xoogga ka dhasha ee dardargeliya baloogga (b) baaxadda iyo jihada dardargelinta baloogga!
Dood
Waa la garanayaa :
Cuf (m) = 4 kg
Dardargelinta cufisjiidadka awgeed (g) = 10 m/s²
Isku-dhafka is-khilaafka taagan = 0,4
Isku-dhafka is-khilaafka taagan = 0,2
Miisaanka baloogga (w) = mg = (4)(10) = 40 Newton
w_x = w sin 30^o = (40)(0,5) = 20 Newton
w_y = w cos 30^o = (40)(0,5√3) = 20√3 Newtons
Xoogga caadiga ah (N) = w_y = 20√3 Newton
Xoogga is-jiidjiid ee taagan (f)_s) = (0,4)(20√3) = 8√3 Newtons
Xoogga is-khilaafka kinetic-ga (f)_k) = (0,2)(20√3) = 4√3 Newtons
F = 40 Newton
La weydiiyay : Balooggu ma wali mise wuu socdaa? Haddii uu dhaqaaqayo, go'aami xoogga ka dhasha ee dardargeliya baloogga iyo dardargelinta baloogga!
Jawab :
Balooggu wuxuu hoos u socdaa haddii F < w_x +f_sBalooggu wuxuu kor u socdaa haddii F > w_x +f_sF = 40 Newton, w_x = 20 Newton iyo f_s = 8√3 = 13,6 Newtons, marka waxaa lagu soo gabagabeynayaa in balooggu uu kor u socdo sababtoo ah F wuu ka weyn yahay w_x +f_s.
(a) xoogga ka dhasha ee dedejiya xannibaadda
Marka balooggu dhaqaaqo, xoogga is jiidjiidka ee ka shaqeeya baloogga waa xoogga is jiidjiidka ee kinetic-ga (f)._k).
(b) baaxadda iyo jihada dardargelinta baloogga
Baaxadda xawaaraha baloogga waa 1,6 m/s² jihada dardargelinta baloogga ayaa kor u socota.

[Ingiriis: Dhaqdhaqaaq diyaarad qallafsan oo leh xoog is jiidjiid ah]