Clustering results of the lowest point of pendulum question.
| Cluster | Response Type | Correct | Incorrect | Total | |
|---|---|---|---|---|---|
| 1 |  |
The net force is zero | 0 | 104 | 104 |
| 2 |  |
The net force is vertically above to the ground surface | 68 | 0 | 68 |
| 3 |  |
The net force is vertically below to the ground surface | 1 | 4 | 5 |
| 4 |  |
The net force acts in the direction of pendulum movement | 0 | 3 | 3 |
| 5 |  |
0 | 3 | 3 | |