Consistent with preliminary question 3, Figure 1 demonstrates that the force needed to keep the block sliding is significantly less than the force needed to initiate sliding. Table 1 represents the mass of the block used during the experiment, which was found to be 0.467 kg. In Table 2, the normal force and peak static friction force were found for the wooden block alone (Table 1) and when it had 500 g or 1000 g of additional weight. To calculate the normal force, the weight of the block (including added weights, if applicable) was multiplied by gravity. As shown in Table 2, when no additional weight was added to the block, the normal force was 4.58 N and the peak static friction was 1.775 N. When 500 g of weight was added to the block, the force normal force was 9.48 N, and the average peak static friction was 3.688 N. Then, when 1,000 g was added to the block, the normal force was 14.38 N, and the average peak static friction was 5,391 N. Figure 2 shows the results of average peak static friction values ​​versus normal force,