AP EAMCET Engineering 2018 Apr 22 Shift 2 Paper

A block of mass 10 kg is placed on a horizontal frictionless surface and is attached to a cord which passes over two light frictionless pulleys as shown in the figure. The hanging block tied to the other end of the cord is initially at rest 2 m above the horizontal floor. If the hanging block strikes the 2 s after the system is released, the weight of the hanging block is ____ (g = 10 ms‌−2)