1. Kubbad, oo ku xiran dhammaadka xarig jiif ah, ayaa lagu wareejinayaa goobaabin 20 cm ah. Kubbadu waxay ku wareegsan tahay 360 o ilbiriqsi kasta. Go'aami baaxadda dardargelinta bartamaha!
La yaqaan:
Xawaaraha xagasha (ω ) = 360 o / ilbiriqsi = 1 kacaan/ilbiriqsi = 6.28 radiyaan/ilbiriqsi
Gacanka (r) = 20 cm = 0.2 m
La Doonayo: Dardargelinta bartamaha (a r )
Xalka:
a r = v 2 / r —> v = r ω
a r = (r ω) 2 / r = r 2 ω 2 / r
a r = r ω 2
a s = dardargelinta bartamaha, v = xawaaraha toosan, r = radius, ω = xawaaraha xagasha
Baaxadda xawaaraha dhexe ee centripetal-ka :
a r = r ω 2 a r = (0,2 m)( 6.28 rad/s)
a r = 1.256 m/s 2
2. Taayir 30 cm ah oo gacan ah ayaa wareegaya xawaare dhan 180 rpm. Go'aami xawaaraha dhexe ee barta ku taal geeska giraangiraha!
La yaqaan:
Gacanka (r) = 30 cm = 0.3 m
Xawaaraha xagasha ( ω ) = 180 wareeg / 60 ilbiriqsi = 3 wareeg / ilbiriqsi = (3)(6.28 gacan) / ilbiriqsi = 18.84 gacan/ilbiriqsi
La Rabay: dardargelinta bartamaha ( a r ) ee r = 0.3 m
Xalka:
Baaxadda xawaaraha dhexe ee centripetal-ka:
a r = r ω 2
a r = (0.3 m)(18.84 rad/s)
a r = 5.65 m/s 2
3. Gaariga tartanka wuxuu ku socdaa waddo wareeg ah oo 50 mitir ah. Haddii xawaaraha gaarigu yahay 72 km/saacaddii, go'aami baaxadda xawaaraha dhexe!
La yaqaan:
Gacanka (r) = 50 mitir
Xawaaraha (v) = 72 km/saacaddii = (72)(1000 mitir) / 3600 ilbiriqsi = 20 mitir/ilbiriqsi
La rabay : baaxadda xawaaraha dhexe (a r )
Xalka:
a r = v 2 / r = 20 2 / 50 = 400 / 50 = 8 m/s 2
4. Gaadhigu wuxuu leeyahay xawaaraha ugu badan ee dhexe ee 10 m/s 2 , sidaa darteed gaadhigu wuu leexan karaa isagoon ka bixin waddo qaloocan. Haddii gaadhigu uu ku socdo xawaare joogto ah 108 km/saacaddii, waa maxay gacanka qalooca aan bannayn?
La yaqaan:
Dardargelinta bartamaha (a r ) = 10 m/s 2
Xawaaraha gaariga (v) = 108 km/ saacaddii = (108)(1000) / 3600 = 30 mitir s / sec c on d
La doonayo: gacan (r)
Xalka:
r = v 2 / a r
r = 30 2/10 = 900 / 10 = 90 mitir s
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- Cutubyada xaglaha ee beddelka dhibaatooyinka muunada leh ee xalalka
- Dhibaatooyinka muunadda iyo xalalka barakaca xagal iyo barokaca toosan
- Dhibaatooyinka muunada xawaaraha xagasha iyo xawaaraha toosan ee xalalka
- Muunadaha muunadaha dardargelinta xagasha iyo dardargelinta toosan ee xalalka
- Dhibaatooyinka muunadaha ee xalalka ah ee dhaqdhaqaaqyada wareegsan ee isku midka ah
- Muunadaha dhibaatooyinka dardargelinta dhexe ee xalalka
- Dhaqdhaqaaqyo wareeg ah oo aan isku mid ahayn oo muunad ah oo ku saabsan xalalka
