$3-26.$ The $10-lb$ weight $A$ is supported by the cord $AC$ and roller $C,$ and by the spring that has a stiffness of $k=10l\frac{b}{i}n.$ If the unstretched length of the spring is $12$ in $.$ determine the distance $d$ to where the weight is located when it is in equilibrium.

$3-27.$ The $10-$lb weight $A$ is supported by the cord $AC$ and roller $C,$ and by spring $AB.$ If the spring has an unstretched length of $8$ in $.$ and the weight is in equilibrium when $d=4in.,$ determine the stiffness $k$ of the spring.

Shot on AWESOME A$7$Drobs. $3-26/27$