DP Physics (first assessment 2025)
Question 19M.1B.SL.TZ1.b.ii
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.1B.SL.TZ1.b.ii |
| Level | SL | Paper | 1B | Time zone | TZ1 |
| Command term | Explain, State | Question number | b.ii | Adapted from | N/A |
b.ii.
[Maximum mark: 2]
19M.1B.SL.TZ1.b.ii
There is an advantage and a disadvantage in using two masses that are almost equal.
State and explain the disadvantage with reference to your answer to (a)(ii).
[2]
Markscheme
the percentage error in the difference of the masses is large ā
leading to a large percentage error/uncertainty in g/of the experiment ā
Do not accept ideas related to the mass/moment of inertia of the pulley.
Examiners report
In part ii) many were able to appreciate that the resultant percentage error in āgā was relatively large however linking this with what caused the large uncertainty (that is, the high % error from the small difference in masses) proved more challenging.
