Ho potlakisa ha centripetal ke ho potlakisa ho bonoang ke ntho e tsamaeang ka selikalikoe ka lebelo le sa fetoheng. Ke mohopolo oa bohlokoa fisiks, haholo-holo matla a potolohang le mechine ea khale. Ho potlakisa ha centripetal ho ikarabella bakeng sa ho boloka ntho tseleng e chitja ka ho lebisa matla bohareng ba selikalikoe. Sehloohong sena, re tla hlalosa ka botlalo mokhoa oa ho potlakisa ha centripetal, ts'ebeliso ea eona bophelong ba letsatsi le letsatsi, 'me re fane ka mehlala e' maloa ea mathata ho tebisa kutloisiso ea rona.
Khopolo ea ho Potlaka ha Centripetal
Ha ntho e tsamaya tseleng e chitja, leha lebelo la yona le sa fetohe, tataiso ya yona e dula e fetoha. Phetoho ena ya tataiso e bontsha ho potlaka, ho bitswang ho potlaka ha centripetal. Potlako ena e dula e lebisitswe bohareng ba sedikadikwe.
Ho ya ka dipalo, ho potlakisa ha centripetal (\( a_c \)) ho ka hlaloswa ka tsela ena:
\[ a_c = \frac{v^2}{r} \]
Di mana:
– \( a_c \) ke ho potlakisa ha centripetal (ka limithara ka motsotsoana, \( m/s^2 \)).
– \( v \) ke lebelo le otlolohileng la ntho (ka limithara ka motsotsoana, \( m/s \)).
– \( r \) ke radius ya tsela e chitja (ka dimithara, m).
Foromo e 'Ngoe ea ho Potlakisa Centripetal
Ntle le foromo e ka hodimo, ho potlakisa ha centripetal ho ka boela ha hlaloswa ka mokgwa wa lebelo la angular (\( \omega \)):
\[ a_c = \omega^2 r \]
Di mana:
– \( \omega \) ke lebelo la angular (ka radians ka motsotsoana, \( rad/s \)).
Kamano pakeng tsa lebelo le otlolohileng le lebelo la angular ke:
\[ v = \omega r \]
Ha re kopanya mekhoa ena e 'meli, re ka bona hore ho potlakisa ha centripetal ho ka baloa ho sebelisoa lebelo la angular.
Litšebeliso tsa ho Potlakisa ha Centripetal Bophelong ba Letsatsi le Letsatsi
1. Koloi e Retelehang
Ha koloi e reteleha, mabili a na le matla a ho hohlana tseleng e lebang bohareng ba mothinya, a hlahisa lebelo le bohareng ba koloi le bolokang koloi tseleng e chitja.
2. Maeto a ho Tsamaea Serapeng sa Boithabiso
Maeto a mangata a boikhathollo, joalo ka li-roller coaster le li-carousel, a sebelisa molao-motheo oa ho potlakisa bohareng ba lebala. Matla ao bapalami ba a fumanang maetong ana a hlahisoa ke ho potlakisa bohareng ba lebala.
3. Lipolanete tse Potolohang Letsatsi
Lipolanete tse potolohang letsatsi li na le lebelo le bohareng ba letsatsi le bakoang ke matla a khoheli a li hulang letsatsing. Ho potlakisa hona ho boloka lipolanete li potoloha ka selikalikoe kapa ka tsela e chitja.
4. Lielektrone tse potolohang Nucleus ea Atomic
Mohlaleng oa athomo oa Bohr, lielektrone tse potolohang nucleus ea athomo li na le lebelo la centripetal le hlahisoang ke matla a electrostatic pakeng tsa lielektrone le liprothone.
Lipotso tsa Mohlala oa ho Potlakisa ha Centripetal
Mohlala oa 1: Ho Retoloha ha Koloi
Potso:
Koloi e tsamaeang ka lebelo la 20 m/s e thinya sekhutlong ka radius ea limithara tse 50. Bala lebelo la bohareng ba koloi.
Tharollo:
Sebelisa foromo ea ho potlakisa centripetal:
\[ a_c = \frac{v^2}{r} \]
Kenya mekhoa e tsebahalang sebakeng sa eona:
\[ a_c = \frac{(20 \, \text{m/s})^2}{50 \, \text{m}} \]
\[ a_c = \frac{400 \, \text{m}^2/\text{s}^2}{50 \, \text{m}} \]
\[ a_c = 8 \, \mongolo{m/s}^2 \]
Kahoo, lebelo la bohareng ba koloi ke 8 m/s².
Mohlala oa 2: Leeto la Carousel
Potso:
Ngoana o lutse moeling oa potoloho ea merry-go-round ea limithara tse 3 e potolohang ka lebelo la angle la 2 rad/s. Bala lebelo la centripetal leo ngoana a le utloang.
Tharollo:
Sebelisa foromo ea ho potlakisa centripetal ka mokhoa oa lebelo la angular:
\[ a_c = \omega^2 r \]
Kenya mekhoa e tsebahalang sebakeng sa eona:
\[ a_c = (2 \, \mongolo{rad/s})^2 (3 \, \mongolo{m}) \]
\[ a_c = 4 \, \text{rad}^2/\text{s}^2 \cdot 3 \, \text{m} \]
\[ a_c = 12 \, \mongolo{m/s}^2 \]
Kahoo, lebelo la ho potlaka ha centripetal leo ngoana a le fumanang ke 12 m/s².
Mohlala oa 3: Lisathelaete tse Potolohang Lefatše
Potso:
Sathelaete e potoloha Lefatše bophahamong boo radius ea potoloho ea eona e leng 7000 km. Haeba lebelo la sathelaete e le 7,5 km/s, bala lebelo la bohareng le bonoang ke sathelaete.
Tharollo:
Taba ea pele, fetola li-unit ho ba limithara:
\[r = 7000 \, \mongolo{km} = 7 \makgetlo a 10^6 \, \mongolo{m} \]
\[v = 7,5 \, \mongolo{km/s} = 7500 \, \mongolo{m/s} \]
Sebelisa foromo ea ho potlakisa centripetal:
\[ a_c = \frac{v^2}{r} \]
Kenya mekhoa e tsebahalang sebakeng sa eona:
\[ a_c = \frac{(7500 \, \text{m/s})^2}{7 \times 10^6 \, \text{m}} \]
\[ a_c = \frac{56,25 \times 10^6 \, \text{m}^2/\text{s}^2}{7 \times 10^6 \, \text{m}} \]
\[ a_c = 8,04 \, \mongolo{m/s}^2 \]
Kahoo, lebelo la seterata le fihlellehang bohareng ke 8,04 m/s².
Mohlala oa 4: Bolo e Potolohang Khoeleng
Potso:
Bolo e boima ba 0,5 kg e tlangwa ka thapo e bolelele ba mithara e le 1 mme e otlollwe ka selikalikoe se rapameng ka lebelo la 4 m/s. Bala matla a bohareng a bonoang ke bolo.
Tharollo:
Sebelisa foromo ea ho potlakisa centripetal:
\[ a_c = \frac{v^2}{r} \]
Kenya mekhoa e tsebahalang sebakeng sa eona:
\[ a_c = \frac{(4 \, \text{m/s})^2}{1 \, \text{m}} \]
\[ a_c = 16 \, \mongolo{m/s}^2 \]
Sebelisa Molao oa Bobeli oa Newton ho bala matla a bohareng:
\[ F_c = ma_c \]
\[ F_c = (0,5 \, \text{kg})(16 \, \text{m/s}^2) \]
\[ F_c = 8 \, \mongolo{N} \]
Kahoo, matla a bohareng a fumanoang ke bolo ke 8 N.
Qetello
Ho potlakisa ha centripetal ke ntlha ea bohlokoa ho utloisiseng motsamao o chitja. Re sebelisa mokhoa oa ho potlakisa ha centripetal, re ka bala ho potlakisa ho bonoang ke ntho e tsamaeang tseleng e chitja, hammoho le matla a hlokahalang ho boloka motsamao oo. Ts'ebeliso ea mohopolo ona e kholo, ho tloha likoloing tse retelehang likhutlong le maetong a boikhathollo ho ea ho li-satellite tse potolohang Lefatše. Kutloisiso e felletseng ea ho potlakisa ha centripetal ha e bohlokoa feela fisiks ea khopolo-taba empa hape e na le lits'ebetso tse ngata tse sebetsang bophelong ba letsatsi le letsatsi le theknoloji ea sejoale-joale.
