Posted in Ֆիզիկա, Uncategorized

Ծանրության ուժ, մարնի կշիռ

Ծանրության ուժ, մարնի կշիռ

277.

V=18,75

P=mg

G=9,8 ն/կգ

V=18,75=0,018

1մ^3=1000դմ^3=լիտր

1լ=0,001’մ^3

ρ=800 կգ/մ^3

m= ρV=800 կգ/մ^3=0,01875=15

ρ=mg=15կգ.10 ն/կգ

 

288/

 

V=25լ=0,025մ^3

P=mg=710 կգ/մ^3.0,025=17,75.10ն/կգ=177,5Ն

 

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