Start dgn definition dlu la
Torque [daya pusingan] : Force [daya] (arah tangent dgn radius pusingan) darab dgn radius pusingan, dpt la nilai torque. Lg besa torque, lg besa daya pusingan. Sbb tu dlm spec engine, lg besa torque engine, lg kuat la engine tu kan. Contoh kalau nk compare engine. Kalau radius pusingan shaft due2 engine sama, lg besa torque engine tu, maknanye lg besa force la, pasal radius pusingan sama.
T = F . r [N.m]
Then, angular velocity
Angular velocity [bape cpt sudut bukak] : bukaan sudut bahagi masa diambil utk bukaan sudut tu (bukaan sudut / masa) ; --- > ф/time = ω
yg ni normally unit die
radian / sec [rad/s]
---> 2Π radian = 360 darjah (kene ingat nih)
Linear velocity plak.
Ok start dgn formula basic bulatan, ukur lilit, or perimeter bulatan = ( 2Π ) r ---> 2Π sama dgn bukaan 360 darjah kan
So, kalau roda begolek satu pusingan, maka jarak linear die sama dgn 2Πr la kan.
jadinye, utk linear velocity, (bukaan sudut) darab r / masa la kan ---> ф r / t [m/s] or kalau susun balik, (ф/ t). r = ω . r
So dpt la 1 derivative equation , hasil gabungan 2 equation yg kite define td..heheh
Torque (T) = Force darab radius = F . r
Angular velocity (ω) = Bukaan sudut / masa = ф / time
Linear velocity (v) = bukaan sudut darab radius bahagi masa = ф . r / t = (ф / t) . r = ω . r
Next, kite pegi kat Power plak
First jom define ape itu kerja dlu. Kerja (work) = Daya (force) darab jarak daya tu dikenakan. Contoh kalau kite tilak dinding, gunakan daya menolak, tp dinding x gerak2, maknanye xde keje la tu..tp kalau tolak kete ke, kete tu begerak, kerja = daya darab jarak kete tu gerak la.
So, kite ada, Kerja (work) = Daya (force) . jarak (distance)
Power = Kadar kerja yg dibuat, bahagi dgn masa kerja tu dibuat or dihabiskan. Kire lg byk keje korang buat dlm satu2 period masa, lg power la korang...
Power = Work / time
= (Force . distance) / time [(F . d) /t]
= Force . (distance / time) [F . (d/t)]
= Force . linear velocity [F . ω . r)
= Torque . radius [(F . r) . ω]
layan
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