А=F*S*cos a
Еп=mgh
M=m0N
Ek=m*v^2/2
v=s/t
N=A/t
η=Aп/Aз*100%
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А=F*S*cos a
Еп=mgh
M=m0N
Ek=m*v^2/2
v=s/t
N=A/t
η=Aп/Aз*100%