Equipartition of Energy: Different mass balls bounce out at different times.

• C+55+60

Bowl is shaken. Different mass balls bounce out at different times. Four sets of 30 mm diameter balls of different masses (ping pong, styrofoam, wood, super balls) are placed in a clear plastic bowl. The bowl is shaken vigorously, giving all the balls the same approximate kinetic energy. As the shaking continues, the lighter balls have greater velocities for the same average kinetic energy, and these hop out of the bowl first. Then the styrofoam, then the wood, then the 4 ping pong balls, super balls bounce out. LIQUIFACTION OF A GAS.