Base your answers to questions on the information below and on your knowledge of science.
Box Pushes and Swinging Pendulums
In Investigation 1, two students pushed on opposite sides of the same box on a smooth floor. Each student pushed against a force meter so the class could measure the push in newtons (N). The class recorded whether the box moved.
In Investigation 2, students made pendulums by tying a washer to strings of different lengths. They pulled each washer to the side, let go, and timed how long it took to make 10 complete swings (back and forth).
Each force meter measures how hard that student pushes, in newtons (N).
| Trial | Push to the Right (N) | Push to the Left (N) | Result |
|---|---|---|---|
| 1 | 20 | 20 | Did not move |
| 2 | 30 | 20 | Moved right |
| 3 | 20 | 35 | Moved left |
| 4 | 40 | 40 | Did not move |
The washer is pulled to the side and let go. Moving over and back one time counts as one complete swing.
| String Length (cm) | Time for 10 Swings (s) | Time for 1 Swing (s) |
|---|---|---|
| 25 | 10 | 1 |
| 50 | 14 | 1.4 |
| 100 | 20 | 2 |