Timing many oscillations rather than one improves:

  1. the systematic error of the clock
  2. the value of g directly
  3. the percentage uncertainty in the period
  4. the length of the pendulum
Answer

C) the percentage uncertainty in the period

The reaction-time uncertainty is shared over many oscillations. SLO P-11-A-05 · Application

Physics MCQ · More Physical Quantities and Measurement MCQs · Practise