pt.m:Vectorial:T+N+G=ma
Scalar:Ox:mgsinβ-T=ma
Oy:N-mgcosβ=0=>N=mgcosβ
mgsinβ=ma+T (1)
Pt.M:Vectorial:T+N'+G'=Ma
Scalar:Ox:T-Mgsinα=Ma
Oy:N'-Mgcosα=0=>N=Mgcosαα
Mgsinα=T-Ma (2)
(1)+(2)=>g(msinβ+Msinα)=a(m+M)=>a=g(msinβ+Msinα)/(m+M)
T=Mgsinα-Ma=M(gsinα-a)