During the second part of class on September 17th, my partner and I participated in the in class experiment which consisted of building a robotic car out of legos and then connecting it to the computer and making it work with the program.
After building it, we let the car run for 2 seconds each time, once at the speed of 75, once at 80, and once at 85.
These are the results from each trial.
Time Power Circumference Number of Wheel Turns R1 R2
2 75 .1595 3.333 1128 1137
2 80 .1595 3.575 1287 1298
2 85 .1595 3.3611 1210 1219
Distance: Power Actual Calculated
75 .570255 60 cm
80 .499804 55 cm
85 .536138 56 cm
For percent error we used this equation:
(measure distance) – (computer calculated distance)/
(measured + calculated/2) x 100%
We then used it to calculate the percent error for each trial.
75 —-> (60 – 0.499804) / (60 – 0.499804 / 2) X 100% = 54.991
80—-> (56 – 0.536138) / (56 – 0.536138 / 2) X 100% = 56.990
85—–> (60 – 0.570255) / (60 – 0.570255 / 2) X 100% = 59.990