Problem $2\mathrm{.}8$: As illustrated in Fig $\sqrt[\phantom{2}]{9}$ the block held in the equilibrium position.

a$)$ Determine the stretch in each spring for equilibrium of the $2-kg$ block. Note that, the springs are

shown in the equilibrium position.

b$)$ Determine the mass of the block at $D$ if the unstretched length of spring $AB$ is $3$ m $.$

Figure $8$: Suspended block by springs