Could you show me how to solve this task? Circular shaft of diameter $d$ with two wheels of radii $r_1$ and $r_2=2r_1$ is clamped in the rigid

block as shown in figure. Produace diagrams of $M_b,M_T$ and $M_{eq}.$ Calculate a necessary diameter d$.$ Use Huber$-$Mises yield criterion.

Data: $P_1=600N,P_2=1\mathrm{.}2kN.a=0,1m,b=0,2m.r_1=50mm,k_g({}_{\text{a}\text{l}\text{l}})=100$MPa