A block with mass m $=6\mathrm{.}6$ kg is hung from a vertical spring. When the mA block with mass m $=5\mathrm{.}2$ kg is attached to two springs with spring constants kleft $=32$ N$/$m and kright $=48$ N$/$m$.$ The block is pulled a distance x $=0\mathrm{.}26$ m to the left of its equilibrium position and released from rest.

$1)$

What is the magnitude of the net force on the block $($the moment it is released$)?$

mass hangs in equilibrium, the spring stretches x $=0\mathrm{.}26$ m$.$ While at this equilibrium position, the mass is then given an initial push downward at v $=4\mathrm{.}4$ m$/$s$.$ The block oscillates on the spring without friction.

$1)$

What is the spring constant of the spring?