3.1 Trial Test and Design Modification
MODIFICATION(S)
DRAFT:
FINAL:
3.2 Test Data
Run Number
|
Run 1
|
Rerun 1
|
Rerun 2
|
Total time of Run
|
5.3s
|
2.1s
|
7.5s
|
Total distance of Run
|
2.2m
|
2,5m
|
9m
|
Time for lever to fully release
|
1.0s
|
0.7s
|
1.2s
|
Distance car travels while lever is releasing
|
1.5m
|
0.5m
|
1.5m
|
Observations – did car travel smoothly,
straight, always forward, etc?
|
Car travelled towards the left
|
Car travelled towards right
|
Car travelled towards the right
|
Did lever / string operate smoothly?
|
No
|
No
|
Yes
|
Filename of video recorded is:
|
|||
Area for improvement (1 only)
|
Fragile Base
|
Distance travelled was too short
|
The egg should be held
|
Possible reason (1 only)
|
The base (Cardboard) too soft and not durable
|
Length of the string was too short
|
No space
|
Modification made (1 only)
|
Removal of cardboard base
|
Addition of a wooden rod to increase the length of the string
|
Addition of egg carton to hold the egg in place
|
MODIFICATION(S)
DRAFT:
FINAL:
3.2 Test Data
1.All relevant measurements of your car (after modification).
Mass of your car
|
185g
|
Mass of each wheel (or one of they are all the same)
|
15g
|
Wheel diameter
|
10cm
|
Axle diameter
|
0.8cm
|
Length of string (power stroke)
|
27cm
|
Approx. number of wraps of string
|
12
|
Length of lever extension
|
17cm
|
Overall length
|
23cm
|
Overall width
|
29cm
|
Overall height
|
10cm
|
2. Data tables showing the results of all 3 trials.
3.3 Video Clips
| Run Number | Run 1 | Rerun 1 | Rerun 2 |
| Total time of Run | 7.5s | 7.3s | 8.1s |
| Total distance of Run | 9m | 10m | 9m |
| Time for lever to fully release | 1.2s | 1.1s | 1.8s |
| Distance car travels while lever is releasing | 1.5m | 1.5m | 1.5m |
| Observations – did car travel smoothly, straight, always forward, etc? |
Car travelled towards the right | Car travelled towards the right | Car travelled towards the right |
| Did lever / string operate smoothly? | Yes | Yes | Yes |
| Filename of video recorded is: | http://www.youtube.com/watch?v=hMjOJDHhSH8&feature=youtu.be |
http://www.youtube.com/watch?v=oJmbayg0Yx0 |
http://www.youtube.com/watch?v=00OuiUh0Ezc&feature=youtu.be |
3.3 Video Clips
1st Run
1st Rerun
2nd Rerun
1. http://www.youtube.com/watch?v=hMjOJDHhSH8&feature=youtu.be
2. http://www.youtube.com/watch?v=oJmbayg0Yx0
3. http://www.youtube.com/watch?v=00OuiUh0Ezc&feature=youtu.be
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