Anne Smolinski as910513@ohio.edu Wednesday 11:50-1:40
TA: Sanjoy Sarkar
November 11, 2017
Experiment 37: Technical Report
ABSTRACT In experiment 37, the friction force is being explained and tested by using a block that is being pulled across a wooden base. Out of the four different types of friction, two will be tested during this experiment: (i) static and (ii) kinetic. Static friction can be defined as the force that resists motion of an object to a surface so there motion is not relative to one another. The maximum static friction force (f_(s max)) is the maximum force applied to the block before it starts to move. After the maximum static friction has been reached the block starts to move and the friction is …show more content…
We calculated the coefficient of kinectic friction two differents way. The first method we used was based on calculating the kinetic friction from velocity of the moving block. The second method we used was using the acceleration of the block to figure out the kinetic friction force then the coefficient of kinetic friction. In real world situations, the value of kinetic friction will always be smaller then the value of static friction. In our experiment we figured out the value of the coefficient of static friction to be 0.52229 and the value of the coefficient of kinectic friction to be 0.45797 and 0.60758. We have two different values for the coefficent of kinectic friction because we calculated it using two different methods. The 0.45797 value was from the first method where we used the constant velocity in our calculations. The 0.60758 value was from the second method where we used the acceleration in our calculations. The value of static friction is 3.296. The value of kinetic friction using the first method is 2.89. The value of kinetic friction using the second method is 3.83. In our calculations, for the first case, the value of the coefficient of kinetic friction is smaller then the coefficient of static friction. In the second case, our calculated value of the coefficient of kinetic friction is larger then the coefficient of static friction. In both cases the values are all pretty close to eachother. The values do not fall within the standard deviation of eachother, but they are still pretty close. There are many different components of this experiment that could have led to our error in not having the correct numbers for static friction being greater then kinetic friction. There could be human error with things such as rounding and calculations, or even writing down the wrong thing. There could also be