Two blocks are connected by a light string that passes ovecr a frictionless pulley. The block of mass m$1$

$=4$ kg lies on a horizontal surface and is connected to a spring of force constant k $=20$ N$/$m$.$ The system is released from rest when the spring is unstretched. The mass of the second block is m$2=$

$3,6$ kg $($Take g$=9\mathrm{.}81$ m$/$s$2.)$

A$)$ Calculate the distance, h$,$ the hanging block of mass m$2$ falls before coming to rest, if there is no friction between the block of mass m$1$

and the surface. Provide your answer in meters.