Newton's law of Cooling Newton's Law of Cooling This investigation is from Alastair McNaughton's book The New World of Calculus Aim: To develop skills in discovery learning and problemsolving. Instructions: You will need a large bowl of cold water, a testtube of hot water, a thermometer and a stopwatch. Put the testtube of hot water in the bowl of cold water, and record the temperature each minute for about ten minutes. Your task is to find the differential equation that best describes the cooling process. Begin by organising your data in a table like this:
HINT You can find the values for by subtracting consecutive values of s. Now in order to form a differential equation which describes this data, we need to construct a graph of this information, showing on the yaxis, and temperature on the xaxis. You should be able to write down a differential equation. The next thing is to solve this differential equation. Finally once you have your solution, take one last reading of the temperature to check the accuracy of your method. Further experiment Repeat the same treatment you followed in the class experiment, using this data:

