a) Vectorial:G+N+f=ma
Scalar:Ox:f=ma=1*1,73=1,73 N
b) Gt=G+G'
mt=M+m
Nt=N+N'
Vectorial:F+Gt+Nt=mta
Scalar:Ox:Fcosα=mta=>F=mta/cosα=(4+5)√3/√3/2=5*2=10 N
c) Oy:Nt-mtg-Fsinα=0=>Nt=mtg+Fsinα=5*10+10*0,5=50+5=55 N
d)Vectorial:T+G'=Ma
Scalar:Ox:T-Mg=Ma=>T=M(a+g)=4(2+10)=4*12=48 N
F'=T=48 N
r=1 mm=0,001 m
S=πr²=3,14*0,001²=0,00000314 m²
σ=F'/S=48/0,00000314 =15286624 N/m²
