Makala a Selikalikoe: Mehopolo, Liforomo le Litšebeliso Bophelong ba Letsatsi le Letsatsi
Lekala la sedikadikwe ke mohopolo wa bohlokwa thutong ya jeometri mme le bapala karolo ya bohlokwa ditshebedisong tse fapaneng tsa letsatsi le letsatsi le tsa saense. Lentswe "lekala" le tswa ho Sejavanese, le bolelang lekala kapa karolo. Ka hona, lekala la sedikadikwe le ka hlaloswa e le karolo ya sedikadikwe se lekanyeditsweng ke di-radii tse pedi le arc.
Tlhaloso le Likarolo tsa Lekala la Selikalikoe
Ho ya ka jeometri, karolo ya sedikadikwe ke sebaka se ka hara sedikadikwe se moeditsweng ke di-radii tse pedi (radii) le arc. Ho nolofatsa mohopolo, ha re nahaneng ka sedikadikwe se nang le setsi sa O le dintlha tse pedi A le B moeding wa sedikadikwe. Karolo ya sedikadikwe ke sebaka se bopilweng pakeng tsa radii OA, OB, le arc AB.
Likarolo tse ka sehloohong tsa lekala le chitja li kenyelletsa:
1. Radius (R): Ke mola o otlolohileng ho tloha bohareng ba selikalikoe ho ea pheletsong ea selikalikoe.
2. Arc (ARC): Ke karolo e kobehileng ea selikalikoe e hokahanyang lintlha tse peli moeling oa selikalikoe.
3. Sekhutlo se Bohareng (θ): Ena ke sekhutlo se bopilweng ke di-radii tse pedi le setsi sa sedikadikwe.
Foromo ea Lekala la Selikalikoe
Ho na le mekhoa e 'maloa ea bohlokoa e amanang le karolo ea selikalikoe eo u hlokang ho e tseba, ho kenyeletsoa:
1. Sebaka sa Lekala la Selikalikoe
Foromo ea ho bala sebaka sa karolo ea selikalikoe ke:
\[
L = \frac{\theta}{360^\circ} \times \pi R^2
\]
Di mana:
– \( \theta \) ke sekhutlo se bohareng ka di-degree
– \( R \) ke radius ea selikalikoe
– \( \pi \) ke Pi e sa fetoheng (≈ 3.14159)
2. Bolelele ba Arc
Foromo ea ho bala bolelele ba arc ke:
\[
s = \frac{\theta}{360^\circ} \times 2 \pi R
\]
Moo matšoao a emelang likarolo tse tšoanang le tse foromong ea sebaka, empa sephetho ke bolelele ba arc.
3. Sebaka se ka lehlakoreng pakeng tsa di-spokes
Foromo e amanang le bolelele ba radius le arc e ka nolofatswa ka ho sebedisa radians ho ena le di-degree:
\[
L = \frac{1}{2} R^2 \theta \text{ (ka radians)}
\]
Le bolelele ba arc:
\[
s = R \theta \text{ (ka radians)}
\]
Litšebeliso Bophelong ba Letsatsi le Letsatsi
Ho utloisisa makala a potolohang ho bohlokoa eseng feela mafapheng a thuto empa hape le lits'ebetsong tse fapaneng tsa ts'ebetso. Mehlala e meng ea kamoo makala a potolohang a sebelisoang kateng bophelong ba letsatsi le letsatsi ke ena:
1. Moralo le Meaho
Moralong le meahong, mohopolo oa lekala le chitja o atisa ho sebelisoa ho theha meaho e chitja joalo ka mathule, marokho a kobehileng, le liholo tsa boithabiso. Ka ho sebelisa lipalo tsa lekala le chitja, litsebi tsa meralo ea meaho li ka lekanya le ho haha likarolo tse chitja tsa boholo bo fapaneng ho fihlela litlhoko tsa projeke.
2. Lipapali
Disekoere le makala le tsona di hlaha hangata mabaleng a dipapadi. Lebaleng la basketball, mola wa dintlha tse tharo ke sekoere seo ha e le hantle e leng sekoere sa sekoere se seholo. Lebaleng la ho matha, sebaka sa ho reteleha se chitja ho boloka lebelo la ba mathang.
3. Theknoloji le Boenjiniere
Theknolojing le boenjiniere, ho bala lekala la selika-likoe ho sebelisoa ho rala lisebelisoa le mechine e mengata e fapaneng. Mohlala, ho raleng li-gear, li-turbine le likarolo tse ling tse fapaneng tsa mechini. Bokhoni ba ho bolela esale pele le ho bala lekala la selika-likoe bo lumella baenjiniere ho rala litsamaiso tse sebetsang hantle le tse tšepahalang haholoanyane.
4. Bolepi ba linaleli
Ho tsa bolepi ba linaleli, khopolo ea karolo ea selikalikoe e thusa bo-rasaense ho bala litsela tsa potoloho ea lipolanete le li-satellite. Mohlala, li-circles tse bonahalang tse bakoang ke ho fifala ha khoeli kapa letsatsi li ka utloisisoa le ho hlalosoa ho sebelisoa melao-motheo ea karolo ea selikalikoe.
5. Bophelo bo Botle
Esita le lefapheng la bophelo bo botle, mohopolo oa makala a chitja o thusa ho etsa mohlala le ho sekaseka meaho e fapaneng ea 'mele hammoho le tšebeliso ea lisebelisoa tse fapaneng tsa ho nepahala tse kang MRI le CT scans.
Thuto e Bonolo ea Nyeoe
Ho tebisa kutloisiso ea rona haholoanyane, ha re shebeng thuto e bonolo ea mohlala.
Mohlala, ha re re re na le pizza e bophara ba 20 cm. Re batla ho seha selae sa pizza ka sekhutlo sa di-degree tse 45 bohareng ba selikalikoe.
Taba ea pele, re fumana sebaka sa pizza:
\[
R = \frac{diameter}{2} = \frac{20 \text{cm}}{2} = 10 \text{cm}
\]
Ka mor'a moo, re bala sebaka sa selae sa pizza (lefapha la selikalikoe):
\[
L = \frac{45^\circ}{360^\circ} \times \pi \times (10 \text{ cm})^2 = \frac{1}{8} \times \pi \times 100 \text{ cm}^2 \hoo e ka bang 39.27 \text{ cm}^2
\]
Ebe re bala bolelele ba arc ea selae sa pizza:
\[
s = \frac{45^\circ}{360^\circ} \times 2 \pi \times 10 \text{ cm} = \frac{1}{8} \times 2 \pi \times 10 \text{ cm} \approx 7.85 \text{ cm}
\]
Kahoo, re fumana hore sebaka sa selae sa pizza se ka ba 39.27 cm² mme bolelele ba arc ea eona bo ka ba 7.85 cm.
Qetello
Lekala la sedikadikwe ke mohopolo wa motheo wa jeometri o nang le tshebediso e pharaletseng mafapheng a fapaneng. Ho tloha moralong ho ya ho theknoloji, ho tloha meahong ho ya ho bolepi ba dinaledi, kutlwisiso e batsi ya lekala la sedikadikwe ke ya bohlokwa bakeng sa ho rarolla mathata a mangata a sebetsang.
Ka ho tseba mehopolo le mekhoa ea motheo e amanang le makala a chitja, motho a ka itokisetsa hamolemo ho tobana le liphephetso tse rarahaneng tsa bophelo ba sebele le ho atolosa pono ea bona saenseng le boenjiniere. Makala a chitja, le hoja a bonahala a le bonolo, a bula monyako oa litšibollo le boqapi bo boholo.
