Two identical metal balls connected at the ends of a light

Last updated: 6/9/2023

Two identical metal balls connected at the ends of a light spring of force constant k form a dumbbell like structure The dumbbell rests on a frictionless horizontal floor and third identical ball is placed at distance I from the right ball of the dumbbell All the three balls are in a line A fourth identical ball moving with velocity u collides with left ball of the dumbbell If all collisions are elastic and rightmost ball aquries a velocity u The minimum value of I is Tu m Find x Vxk ooooooooo