Question

How can I conduct an home experiment to explore:

How thick is the liquid water film beneath a sliding ice cube?

Answer 1

At first u should arrange the surrounding at such low temperature that ice doesn't melt by itself,now sliding ice cube just melt by friction between ice and slidder.now melting of ice will depend upon friction between slider and ice and how much distance it covers before it stops will tell about the total amount of melted ice into water.but for instantaneous measurement of film,we need the velocity of sliding than friction coefficient.by these two we will know the total fictional force working on ice.after getting this force,estimate work done on ice by the formula work done=force ×displacement....now this much energy is provided to ice cube.it will need 540 callory per gram to melt the ice...get the measurement of how much ice is melted.then divide this much weight by lower area of ice cube...this will tell about how arial density of water beneath ice cube....then by this arial density divide volume density of water which is 1g/cm^3...this will be the thickness of water film beneath ice cube