There is an infinite array of ideal springs as shown in figure whose base row is attached to a fixed support All the springs are

Question

There is an infinite array of ideal springs as shown in figure whose base row is attached to a fixed support All the springs are identical and their spring constants are k each Initially all the springs are unstretched Then a constant force F is applied on the free end of topmost spring along it s length Assume all the bars to be of negligible mass Number of springs rows are increasing in GP from top to bottom When the system is in equilibrium choose the CORRECT option s AF Top most spring Top most bar MAL JUL Jul k Free end MAL A Displacement of free end is 2F K B Displacement of free end is F 2K C Displacement of topmost bar is F K D Displacement of topmost bar is F 4K

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