The pendulum shown in Fig. 1.2 is a 50.0 cm rule. The student displaces this pendulum slightly
and releases it so that it swings. She measures the time tC for 20 complete oscillations of the
pendulum.
tC =
(i) State a precaution that you would take to ensure that the measurement of time tC is
reliable.
(ii) Calculate the period TC of the pendulum. The period is the time for one complete
oscillation.
TC =