Spring problem .

Question

Initial lenght of a spring is l. After hanging up a load with mass m on its end, the spring stretched doubly. Where should you hang up a load of mass 2m on now stretched spring so that after equilibrium the load would be within equal distances from both ends of the spring. Don't care about the mass of the spring.

(I apologize for my English)

Answer 1

I explain the problem in the video above. Let me know if it is not clear