Question

va rooooooog.............

Answer 1

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