Ua ntej, cov lus qhia yooj yim ntawm tooj dag raj
Tooj dag yeeb nkab yog lub tubular tivthaiv ua los ntawm cov khoom luam khoom, nrog hluav taws xob zoo, siv cov roj av roj, kav roj thiab lwm cov twj luam rau. Qhov hnyav ntawm lub raj tooj dag zog muaj feem xyuam rau nws cov khoom siv ntom, phab ntsa thickness, txheej uas txoj kab uas hla thiab lwm yam.
Thib ob, qhov hnyav ntawm lub cev hnyav ntawm tooj dag raj saib kev ntsuas kev teeb meem
Lub theoretical hnyav ntawm tooj dag yeeb tuaj yeem suav tau los ntawm cov hauv qab no:
Qhov hnyav=π π π protition Inch ² - Sab hauv Inch ²) × ntev ntev cov khoom siv ntom ntom ÷ 4
Qhov twg π yog qhov chaw nyob ntawm 3.14, sab nraud ntawm cov yeeb nkab txheej, feem ntev yog qhov ntom ntawm tooj daj, feem ntau 8.4 g / cubic centimeter.
Thib peb, Qhov hnyav ntawm brass yeeb nkab thaj kev piv txwv
Cov mis rau kev xam qhov hnyav ntawm tooj dag yeeb nkab ntim ib lub ntsuas yog}. 0267} Phab ntsa thickness × (txheej inch - phab ntsa tuab) × ntev.
Tooj dag yeeb nkab yog ib qho khoom siv raj xa khoom, thiab nws cov kev xam hnyav cov qauv sib txawv ntawm cov yeeb nkab tooj liab. Cov mis rau kev xam qhov hnyav ntawm tooj dag yeeb yog qhov hnyav rau ib lub dav hlau tuab, qhov sib txawv ntawm cov hlab ntsha tawg thiab phab ntsa tuab, thiab qhov ntev. Cov tshuaj no muab txoj hauv kev yooj yim thiab ncaj qha los laij qhov hnyav ntawm tooj dag tubing thiab yog siv rau txhua qhov ntau thiab tsawg ntawm tooj dag tubing. Los ntawm cov mis no, koj tuaj yeem suav qhov hnyav ntawm tooj dag ntawm cov yeeb nkab yas, seb cov khoom siv tau lossis pab tau zoo.
Siv lub raj tooj daj nrog cov cheeb tsam sab nraud ntawm 25mm, ib qhov ntev ntawm 1m ua piv txwv rau kev xam nws lub siab tawv:
Qhov hnyav=π π ×}}} (25}} ² ² 1 ÷ 4 ≈ 1.82 kg
Thib plaub, ntawv
1. Qhov hnyav tiag tiag ntawm lub raj tooj dag zog yuav cuam tshuam los ntawm kev ua lag luam thev naus laus zis thiab lwm yam, cov txiaj ntsig xam tau yog siv xwb.
2. Hauv kev siv tiag tiag, nws raug nquahu kom ntxiv ib qho kev nyab xeeb ntxiv raws li cov xwm txheej tshwj xeeb los xyuas kom muaj kev nyab xeeb thiab kev ntseeg tau ntawm cov yeeb nkab.
Theoretical hnyav ntawm tooj dag yeeb cov txheej txheem yog qhov yooj yim, tsuas yog yuav tsum tau kom yooj yim, tsuas yog siv cov khoom ntom thiab lwm yam tsis raug muab suav. Hauv kev siv cov yeeb nkab tooj daj, raws li cov kev cai tshwj xeeb thiab cov teeb meem tiag tiag los txiav txim siab ntawm cov yeeb nkab tuab ntawm cov yeeb nkab thiab kev siv kev nyab xeeb.
