Dau 35 de puncte si coroana! Va rog am nevoie! Maine dau test...

Miscare uniforma,a=0
Vectorial:F+G+N+Ff=0
Scalar:Ox:Fcosa-Ff=0=>Fcosa=Ff
Oy:N-mg+Fsina=0=>N=mg-Fsina
Ff=μN=μ(mg-Fsina)
Fcosa=μmg-μFsina<=>F(cosa+μsina)=μmg=>F=μmg/(cosa+μsina)=0,15•5•10/(0,866+0,15•0,5)=7,5/0,94=7,97 N