Cov txheej txheem:
Video: Daim duab qhia lub cev dawb qhia koj li cas txog lub zog net ntawm ib qho khoom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A dawb - daim duab lub cev qhia cov vectors rau tag nrho cov zog ua yeeb yam ntawm lub cev . Qhov tshwm sim vector pom los ntawm kev suav tag nrho cov vectors tus kheej sawv cev rau net zog . Txij li thaum F = ma, lub acceleration vector yuav taw tes rau hauv tib txoj kev raws li qhov net zog , nrog qhov loj ntawm F / m.
Ib yam li ntawd, koj tuaj yeem siv daim duab qhia lub cev dawb li cas los txiav txim siab lub zog ntawm cov khoom?
Daim duab qhia lub cev pub dawb tsuas yog ib qho yooj yim kos duab ntawm cov khoom uas qhia txhua lub zog uas ua rau nws
- Kos ib daim duab nrawm ntawm qhov khoom.
- Kos ib tug xub qhia txhua lub zog ua rau ntawm qhov khoom.
- Txhawm rau xam cov net quab yuam, ntxiv cov vectors ua rau tib lub axis (x thiab y), ua tib zoo saib xyuas cov lus qhia.
Ib yam li ntawd, lub zog net ua rau ntawm qhov khoom no yog dab tsi? Qhov loj ntawm lub net zog acting on ib khoom yog sib npaug rau qhov loj ntawm lub khoom multiplied los ntawm acceleration ntawm khoom raws li qhia hauv cov qauv hauv qab no. Yog tias net zog acting on ib khoom yog zero, ces tus khoom tsis nrawm thiab nyob rau hauv lub xeev uas peb hu ua equilibrium.
Ib yam li ib tug yuav nug, yuav ua li cas lub cev dawb daim duab qhia txog ntau yam quab yuam ua raws li ib qho khoom?
Tib txoj cai rau kev kos duab dawb - daim duab lub cev yog depict tag nrho tus zog uas muaj rau qhov ntawd khoom nyob rau hauv qhov teeb meem muab. Tom qab ntawd txiav txim siab qhov kev taw qhia uas txhua tus zog yog ua yeeb yam . Thaum kawg, kos ib lub thawv thiab ntxiv cov xub rau txhua tus uas twb muaj lawm zog nyob rau hauv txoj kev tsim nyog; tag nrho zog xub raws li nws hom.
Daim duab qhia lub cev dawb qhia dab tsi?
Hauv physics thiab engineering, a dawb lub cev daim duab (lub zog daim duab , lossis FBD) yog cov duab kos duab siv los ua kom pom lub zog siv, lub sijhawm, thiab qhov tshwm sim tshwm sim ntawm lub cev nyob rau hauv ib tug mob.
Pom zoo:
Koj piav qhia txog qhov nkhaus ntawm daim duab li cas?
Ib txoj kab ncaj nraim yuav qhia txog qhov tsis tu ncua ntawm cov tshuaj tiv thaiv, thaum lub nkhaus qhia txog kev hloov pauv ntawm tus nqi (lossis nrawm) ntawm cov tshuaj tiv thaiv lub sijhawm. Yog hais tias ib txoj kab ncaj nraim los yog nkhaus flattens rau hauv kab kab rov tav, qhov ntawd qhia tias tsis muaj kev hloov pauv ntxiv ntawm cov tshuaj tiv thaiv los ntawm ib theem
Yuav ua li cas koj kos ib daim duab dawb lub cev?
Txhawm rau kos ib daim duab dawb-lub cev, peb kos cov khoom ntawm kev txaus siab, kos tag nrho cov quab yuam ua ntawm qhov khoom ntawd, thiab daws txhua qhov quab yuam vectors rau hauv x- thiab y-cov khoom. Peb yuav tsum kos ib daim duab dawb-lub cev nyias nyias rau txhua yam khoom hauv qhov teeb meem
Vim li cas nws thiaj li hais tias lub Orthocenter ntawm daim duab peb sab obtuse yuav tsum nyob rau sab nraud ntawm daim duab peb sab?
Nws hloov tawm tias tag nrho peb qhov siab ib txwm sib tshuam ntawm tib lub ntsiab lus - lub npe hu ua orthocenter ntawm daim duab peb sab. Lub orthocenter tsis yog ib txwm nyob hauv daim duab peb sab. Yog tias daim duab peb sab yog obtuse, nws yuav nyob sab nraud. Txhawm rau ua kom qhov no tshwm sim cov kab qhov siab yuav tsum tau txuas ntxiv kom lawv hla
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Lub xeev daim duab qauv yog siv los qhia qhov sib lawv liag ntawm lub xeev uas ib yam khoom mus dhau, qhov ua rau kev hloov ntawm ib lub xeev mus rau lwm qhov thiab qhov kev txiav txim uas tshwm sim los ntawm lub xeev hloov. Daim duab ua haujlwm yog ntws ntawm kev ua haujlwm yam tsis muaj qhov tshwm sim (kev tshwm sim) mechanism, lub xeev tshuab yog suav nrog lub xeev triggered