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SualedebSi erTnairi muSaoba sruldeba, maSin namdvili simZlavre<br />
saSualo simZlavris toli iqneba da miviRebT:<br />
amitom<br />
A<br />
N =<br />
Δt<br />
es gantoleba gamosadegi iqneba drois nebismieri SualedisaTvis,<br />
A<br />
N =<br />
t<br />
e.i. simZlavre udris drois erTeulSi Sesrulebul muSaobas.<br />
j<br />
2 −3<br />
[ N] = = vt(vati),<br />
dim N = L TM<br />
wm<br />
energia, kinetikuri energia<br />
energia _ universaluri raodenobrivi zomaa yvela saxis materiis<br />
moZraobis da urTierTqmedebis. materiis moZraobis sxvadasxva saxeebTan<br />
dakavSirebulia energiis sxvadasxva formebi: meqanikuri, siTburi,<br />
eleqtromagnituri, birTvuli da sxva.<br />
sxeulze (nawilakze) momqmedi tolqmedi Zalis muSaoba d r<br />
gadaadgilebaze SeiZleba warmovadginoT Semdegnairad:<br />
2<br />
dv<br />
d r<br />
mv<br />
dA = ( F ⋅ d r)<br />
= m d r = mdv<br />
= mvd<br />
v = d(<br />
)<br />
dt dt<br />
2<br />
frCxilebSi gamosaxulebas kinetikuri energia ewodeba.<br />
sxeulis kinetikuri energia warmoadgens meqanikuri moZraobis<br />
zomas, romelic unda SevasruloT, rom gamoviwvioT mocemuli moZraoba.<br />
kinetikuri energia _ energiaa, romelic gaaCnia moZrav sxeulebs,<br />
e.i. is aris moZravi sistemis mdgomareobis funqcia.<br />
k<br />
W =<br />
Teorema kinetikuri energiis Sesaxeb: tolqmedi Zalis<br />
Sesrulebuli muSaoba nawilakze (sxeulze) tolia misi kinetikuri<br />
energiis cvlilebis:<br />
37<br />
mv<br />
2<br />
2
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