Video: Puas yog slant qhov siab tib yam li qhov siab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov ntsug qhov siab (los yog qhov siab ) uas yog qhov kev ncua deb ntawm sab saum toj mus rau hauv paus. Cov slant qhov siab uas yog qhov kev ncua deb ntawm sab saum toj, hauv qab sab, mus rau ib qho chaw ntawm lub hauv paus ncig.
Ib yam li ntawd, nws yog nug, ua li cas koj pom qhov siab ntawm qhov siab slant?
Siv cov qhov siab ntawm lub khob hliav qab thiab lub vojvoog ntawm lub hauv paus los ua ib daim duab peb sab. Tom qab ntawd, siv Pythagorean theorem los nrhiav qhov slant qhov siab . Saib daim ntawv qhia no kom pom cov txheej txheem no step-by-step!
Ib yam li ntawd, qhov siab slant yog dab tsi? Slant Qhov siab . Cov slant qhov siab ntawm ib qho khoom (xws li frustum, lossis pyramid) yog qhov kev ncua deb ntsuas raws lub ntsej muag sab nraud los ntawm lub hauv paus mus rau apex raws li "center" ntawm lub ntsej muag. Hauv lwm lo lus, nws yog qhov siab ntawm daim duab peb sab suav nrog lub ntsej muag sab nraud (Kern thiab Bland 1948, p. 50).
Hauv qhov no, qhov slant qhov siab siab dua qhov siab?
Cov slant qhov siab yuav ua tau me ntsis ntxiv tshaj lub hauv paus tob vim qhov deb ntawm lub ces kaum ntawm lub hauv paus ntug mus rau lub ncov saum toj kawg nkaus (sawv cev slant qhov siab ) yog loj dua qhov kev ncua deb ntawm qhov nruab nrab ntawm lub hauv paus ntug ncaj mus rau sab saum toj ncov (sawv cev qhov tob tob).
Tus qauv ntawm qhov siab yog dab tsi?
Lub peev xwm lub zog ntawm ib yam khoom loj m ntawm qhov siab h hauv gravitational teb g yog mgh. Yog li 1/2 mv^2 = mgh thiab peb daws rau h. m rho tawm ntawm ob sab ces faib los ntawm g thiab koj tau v^2/2g = h.
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