3 su'aalood oo ku saabsan isle'egta xoogga natiijada
1. Gaari culeyskiisu yahay 5 tan ayaa ka soo dhaqaaqaya nasashada 50 ilbiriqsi gudahood, isagoo gaaraya xawaare dhan 72 km/saacaddii. Xoogga saaran gaariga waa…
La yaqaan
Cufnaanta (m) = 5 tan = 5000 kg
Xawaaraha bilowga ah (vo) = 0
Xawaaraha kama dambaysta ah (vt) = 72 km/saacaddii = 20 m/s
Muddada (t) = 50 ilbiriqsi
La Raadinayo: Xoog (F)
Solution:
Xisaabi dardargelinta adoo isticmaalaya qaacidada Dhaqdhaqaaqa Toosan ee Aan Isku Mid Ahayn:
v t = v o + at
20 = 0 + a (50)
20 = 50 a
a = 20 / 50 = 0,4 m/s 2
Xisaabi xoogga natiijada ka dhasha adoo isticmaalaya qaacidada sharciga labaad ee Newton:
ΣF = ma
F = (5000)(0,4) = 2000 Newtons
2. Gaarigu wuxuu leeyahay miisaan dhan 1 tan, muddo 4 ilbiriqsi ah xawaarihiisu si isku mid ah ayuu u kordhaa laga bilaabo 10 m/s ilaa 18 m/s. Go'aami baaxadda xoogga dedejiya gaariga.
La yaqaan
Cufka gaariga (m) = 1 tan = 1000 kg
Muddada (t) = 4 ilbiriqsi
Xawaaraha bilowga ah (vo o ) = 10 m/s
Xawaaraha kama dambaysta ah (v t ) = 18 m/s
La Raadinayo: Xoog (F)
Solution:
Xisaabi dardargelinta adoo isticmaalaya qaacidada Dhaqdhaqaaqa Toosan ee Aan Isku Mid Ahayn:
v t = v o + at
18 = 10 + a (4)
18 – 10 = a (4)
8 = 4 a
a = 8 / 4 = 2 m/s 2
Xisaabi xoogga natiijada ka dhasha adoo isticmaalaya qaacidada sharciga labaad ee Newton:
ΣF = ma
F = (1000)(2) = 2000 Newtons
3. Labada fallaadhaha xoogga ayaa isku toosan taasoo keenta natiijo ah 10 N. Haddii mid ka mid ah fallaadhaha xoogga uu yahay 6 N, go'aami baaxadda fallaadhaha xoogga kale.
La yaqaan
Xoogga natiijada (F) = 10 N
Xoogga 1 (F 1 ) = 6 N
La Raadinayo: Xoogga 2 (F 2 )
Solution:
F 2 = 10 – 6 = 4 Newton
