Modeling the fall of an object falling with air resistance Sept 12, 14 2016

Modeling the fall of an object falling with air resistance 

Carlos H., Dhalia T., Ariel D.

Sept 12, 14

2. In this lab the goal is to find the relationship between the force of air resistance and speed. 

3. The way this lab will go is by using some features of Logger pro. First the professor found the mass of a group of coffee filters then we could easily find out the mass of each individually. We will capture video of 5 different trials of dropping the coffee filters. Starting with 1 ending with 5. The point is to eventually import the video to logger pro and find the terminal velocity for the coffee filters. 

4. In this lab we utilized the coffee filters the laptop front Camera to record the fall and a yard stick. The yard stick was used as a point of reference to let logger pro what the distance of something is. After recording the video of the 5 trials used a tool where we can plot the data from the video into logger pro. Once we got that data we imported it to excel (manually). We put the tie intervals to ever .1s, as when we plotted dots following the coffee filters on the way down, the frames where changing every .1 sec. the mass of each coffee filter which ended up being .0008947 a constant we were able to get being .00373 N-s/m and n being 1.929. These figures where plugged into the equation (m*g*k*^n)/m to find the acceleration. Once all this was complete we filled down the t, a, change in V, and V columns down. The key to finding the relationship of air resistance and speed was finding the terminal speed. So we ended up looking until the speed remained about constant to the thousandths place.  

In conclusion this lab helps us relate the force of air resistance to its terminal velocity. Thinking into a force diagram type of scenario, when the speed of an object increases, the force pushing or accelerating an object must increase as well to keep it accelerating. If the acceleration is constant the object will eventually find a terminal velocity. The faster something goes the more the air resistance force pushes back.