Link BD consists of a single bar 30 mm wide and 12 mm thick. Knowing that each pin has a10 mm diameter, determine the maximum value of the average normal stress in the link BD if θ = 15 degrees.

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resource-allocation graph -> how to resource allocated for graph.

set of vertices(V)->

1. set of process {P ₁ ,P ₂ ,P _3, P ₄ ,P _5.... P _n }

2. set of resources{R ₁ ,R ₂ ,R ₃ ,R ₄ ,R ₅ ....R _n }

set of edges->

1. P _i  R _j (request edge)

2. R _j  P _i (assignment edge)

resource type=  (squre)

process type=  (circle)

in above question resources allocation graph is

process P = {P ₁ ,P ₂ ,P _3, P ₄ ,P ₅ }

resources R= {R ₁ ,R ₂ ,R ₃ ,R ₄ ,R ₅ }

no cycle are create so not go to deadlock process.

wait for graph -> use only process

if P ₁ is waiting for R ₃ and R ₃ is assigned for P ₄ then we draw only P ₁  P ₄ .

if P 2 is waiting for R ₃ and R ₃ is assigned for P ₄ then we draw only P 2  P ₄ .

etc....

no cycle are create so not go deadlock and say system is safe state.