A student investigates the extension of a latex band when masses are suspended from it.
Identify the three additional items of apparatus from the list below that the student must use to carry out this investigation (assume they already have the latex band and the masses):
The table below shows the student's results:
| Mass in g\text{g}g | Force in N\text{N}N | Extension in cm\text{cm}cm |
|---|---|---|
| 0 | 0 | 0.0 |
| 200 | 2.0 | 1.5 |
| 400 | 4.0 | 4.0 |
| 600 | Missing | 8.0 |
| 800 | 8.0 | 13.5 |
| 1000 | 10.0 | 20.0 |
State the value of the missing force in the table.
Describe how the extension of the latex band changes as the force increases.
Explain whether the latex band obeys Hooke's Law.