Q8 Question: 9 A small particle of mass m moving inside a heavy, hollow and straight tube along the tube axis undergoes elastic collision at two ends. The tube has no friction and it is closed at one end by a flat surface while th other end is fitted with a heavy movable flat piston as shown in figure. When the distance of the piston from closed end is L = Lo the particle speed is v = v. The piston is moved inward at a very low speed V