Coefficient of Static Friction

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The experiment aimed to measure static friction by dragging a block across a surface, but static friction is not applicable once the block is in motion; this scenario involves kinetic friction instead. When graphed, the relationship between mass (or normal force) and applied force should yield a linear relationship for static friction, but the experiment's context indicates that kinetic friction is at play. The confusion arises from the misapplication of static friction principles during the experiment. Therefore, the results may not align with expectations for static friction. Understanding the distinction between static and kinetic friction is crucial for accurate experimental analysis.
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Hey quick question, I did this experiment where I dragged a block across a flat surface with a scale and found the static friction, ehn weight was added to the block and repeated the process. MY question is when graphed with the mass or Fn on the x-axis, and applied force or Fs on the x axis, should it not give a straight line through 0,0 which would be the coeffecient of the static friction?? I am just wondering to know if I am just doing the graph wrong or got messed up results during the experiment.
thanx again
 
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If a block is being dragged, static friction is not involved. This involves kinetic friction.
 

Thread 'Mousetrap Car Energy efficiency'

For simple comparison, I think the same thought process can be followed as a block slides down a hill, - for block down hill, simple starting PE of mgh to final max KE 0.5mv^2 - comparing PE1 to max KE2 would result in finding the work friction did through the process. efficiency is just 100*KE2/PE1. If a mousetrap car travels along a flat surface, a starting PE of 0.5 k th^2 can be measured and maximum velocity of the car can also be measured. If energy efficiency is defined by...
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