7/A cylindrical container contains hydrogen in gaseous state under a light piston. The container and the piston both are very good insulators of heat. Initially the piston stays at a height h, above the bottom of the container in equilibrium. A ball dropped from a height above the piston collides elastically with the piston. When all motion ceases and equilibrium is reestablished, the piston again stays at the height h, Find work done by the gas on the piston and the height above the piston from where the ball was dropped. Ang. -mgh, 5hi

7/A cylindrical container contains hydrogen in gaseous state under a light piston. The container and the piston both are very good insulators of heat. Initially the piston stays at a height h, above the bottom of the container in equilibrium. A ball dropped from a height above the piston collides elastically with the piston. When all motion ceases and equilibrium is reestablished, the piston again stays at the height h, Find work done by the gas on the piston and the height above the piston from where the ball was dropped. Ang. -mgh, 5hi