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va rog f fffff frumos

Va Rog F Fffff Frumos class=

Răspuns :

Vectorial: G₁+G₂+N₁+Ff=0

Scalar:Ox:G₂-G₁sinα-Ff=0

Oy:N₁-G₁cosα=0=>N₁=G₁cosα

G₁=m₁g

G₂=m₂g

2m₂-m₁=1 kg

m₂g-m₁gsin30°-Ff=0<=>10m₂-10*m₁/2-Ff=0 |*2<=>10(2m₂-m1)=Ff<=>10*1=Ff=>Ff=10 N