A light frictionless pulley is suspended with the help of a light spring. One end P of a light inextensible thread that passes over the pulley is free and the other end is tied to another light spring that is affixed to the ground at its lower end as shown in the figure. Stiffness of both the springs is $k=500N/m.$ The free end P is $h=10.0cm$ above the ground. What minimum pull in N at the end P will bring it to the ground?