Mechanical Equivalent of Heat Tube

Place a know mass lea shot into this l m tube and let it fall the length of the tube several times. Measure the rise in temperature of the short to calculate the heat produced. There should be a relation between the number of times you turn the tube over and the temperature of the shot. Heavy cardboard tube is 4cm in diameter and comes with 2 corks for the ends. Requires Lead Metal Shot and thermometer, not include.