1. Setup a results table with average acceleration (of the three trials), average friction force (calculated from Newton's second law F = ma) and total normal force of the sliding block.
2. Plot a graph of average acceleration and normal force .
- Does the acceleration depend on the weight of the block?
3. Calculate the mean (average) value of your accelerations from all trials.
4. Calculate the mean absolute deviation, which is a calculated value for the uncertainty of a mean value. The equation for the mean absolute deviation can be found here
5. From the mean value of the acceleration determine the coefficient of kinetic friction. Use a value of g = 9.81 m/s2, as an exact value for your calculation.