Lipotso tse 3 mabapi le equation ea Impulse
1. Koloi e boima ba 250 kg e tsamaya ka lebelo la 72 km/hora, ebe e potlakiswa ka matla a sa fetoheng hoo ka metsotsoana e 5 lebelo la yona le fetohang 80 km/hora. Fumana hore na pululelo e tsamaya ka metsotsoana e 5.
Tse tsejoang:
Boima ba koloi (m) = 250 kg
Lebelo la pele (vo o ) = 72 km/h = 20 m/s
Lebelo la ho qetela (v t ) = 80 km/h = 22 m/s
Nako ea ho arohana (t) = metsotsoana e 5
Ho batloa: Fumana tšusumetso (I)
tharollo:
Foromo ea tšusumetso: Tšusumetso = Phetoho ea lebelo
I = Δp
I = m (v t – vo o ) = (250)(22 – 20) = (250)(2)
I = 500 kg m/s
2. Ntho e boima ba 0.4 kg e qalang e tsamaya ka lebelo la 20 m/s e emisoa ke matla a sa fetoheng a 50 N ka nako e itseng. Motsamao o moholo hakae?
Tse tsejoang :
Boima (m) = 0.4 kg
Lebelo (v o ) = 20 m/s
Lebelo la ho qetela (v t ) = 0 m/s
Matla (F) = 50 N
Ho Batloa: Tšusumetso (I)
tharollo:
Foromo ea tšusumetso: Tšusumetso = Phetoho ea lebelo
I = Δp
I = m (v t – vo o ) = (0,4)(0 – 20) = (0,4)(-20)
I = 8 kg m/s
3. Ntho e nang le boima ba m e tsamaya ka lebelo le sa fetoheng la v, kahoo motsamao wa ntho ke…
tharollo
Tšusumetso = phetoho mothating. Mothati oa fetoha ha boima kapa lebelo li fetoha. Kahoo haeba lebelo le boima li tsitsitse, ha ho na phetoho mothating. Hore ho se be le tšusumetso.
