Sunday, 3 April 2016

Post PT discussion ( PT 2.5 )

Post-testing Discussion(PT 2)


1)Using your data table , calculate the average velocity for your mousetrap car during the best run in the final assessment.

Best Run : 4.06 meters in 7 seconds

Calculations :

                                The average velocity : 4.06 meters / 7 seconds
                                                                    =0.58m/1s

2)Which part of your mousetrap car design worked the best? Explain your answer.

We feel that the lever of the car helped a lot with the distance it travelled. The use of a pen decreased and possibly removed any bending that might have been caused, reducing any wasted energy. Since the lever is longer than the trap, it increased the amount of string wound around the back axel, which in turn increased the distance travelled as the axel could turn more rounds.

3)If you had more time to work on your mousetrap car, state and explain how you will improve/modify the current design?

The wheels of the car were not always aligned. We had difficulty in making the wheels parallel to each other and stay in that position. During one of the runs, the wheels did not travel in a straight line and were shaky, which reduced the distance that it could have travelled. Given more time, we would have thought of better solutions to overcome this problem.

The side support was not very strong as well, as it gave away the day before due to multiple testings and changes and we had to rebuild it. With more time, we could have found better and stronger materials to use as the support and main structure of the car.


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