A student carries out five trials to measure the time taken for a simple pendulum to complete 50 oscillations. The results are recorded in the table below:
| Trial | Time taken for 50 oscillations (s) |
|---|---|
| 1 | 42.2 |
| 2 | 41.8 |
| 3 | 42.0 |
| 4 | 48.5 |
| 5 | 42.4 |
What is the best estimate for the time period of a single oscillation of this pendulum?
0.674 s0.674\text{ s}0.674 s
0.842 s0.842\text{ s}0.842 s
0.868 s0.868\text{ s}0.868 s
42.1 s42.1\text{ s}42.1 s
47 exam-style questions on OCR GCSE Physics Practical skills. Each one has a worked solution and a mark scheme showing where the marks go.