Massa
Massa — xususijati çismi fizikī buda, ba miqdori modda va energija mutavofiq ast. Massa mafhumi markaziji mexanikai klassikī va fanhoi marbut ba on buda, dar cahorcўbai kinematikai nisbijat dar cand şakli gunogun vonamud şudaast (ba massai nisbijati maxsus va massai nisbijati umumī bingared). Dar nazarijai nisbijat, buzurgiji massai invariant, ki az çihati mafhum ba ƣojai klassikiji massa nazdik ast, dar bajni muşohidoni du sistemai inertsialii gunogun taƣjir namejobad.
Dar istifodai rūzmarra, massa bisjortar ba çoi vazn istifoda burda meşavad, vale dar fizika va sohai muhandisī vazn ma'noi buzurgiji quvvai çozibaro dorad, ki az tarafi Zamin va jo jagon sajjorai digar ba çism ta'sir mekunad.
Vohidhoi massa
[viroiş | edit source]Dar sistemai bajnalxalqiji vohidho SBV massa bo kilogrammho cen karda meşavad. Ba ƣajr az in digar namudi vohidhoi massa, ba monandi gramm, tonna, funt, pud, qadoq, untsija, massai atomī, massai Plankī, massai Oftobī niz farovon istifoda burda meşavad.
Cun bajni massa va energija munosibati relativistī mavçud ast, ba çoi vohidi massa az vohidhoi energija niz istifoda burda meşavad. Masalan, dar fizikai zarrahoi elemetarī az elektron-Volt (eV) istifoda mebarand, ki taxminan ba 1.783 × 10-36 kg barobar ast. Çadvali zer munosibati vohidhoi gunoguni massaro bo SBV dorad:
Massai inertsialī va çoziba
[viroiş | edit source]Mafhuman farqi se namudi massaro bojad dark namud:
- Massai inertsialī
| Vohidhoi gunoguni massa | Sistemai bajnanxalqiji vohidho (kg) |
|---|---|
| tonna | 1000 kg = 103kg |
| gramm | 0.001 kg = 10-3kg |
| funt | 0.454 kg |
| pud | 16 kg |
| qadoq | 0.4 kg |
| untsija | 0.02835 kg |
| massai atomī | 1.660538782 × 10-27 kg |
| massai Oftobī | 1.9891 × 1030 kg |
| massai Plankī | 2.176 × 10-8 kg |