Part $1$

Note that there are $4$ unknown reaction forces in this FBD$.$ We only have $3$ equilibrium equations that can be used to solve for

these unknowns, so we cannot solve for all of the forces. The problem only asks us to find the normal forces $N_A$ and $N_B$ and we

can solve for these two forces. We cannot find the friction forces $F_A$ and $F_B.$ Write one equlibrium equation that can be used to

find the force $N_A.$ Then solve for $N_A.$

Answer: $N_A=$

i

$Ib$

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Hint

Attempts: $0$ of $3$ used

Part $2$