<h2>✏Answer ✏</h2>
<em>The short answer is to reduce the uncertainty in your measurement of the period. ... If you are using a stopwatch and manual timing- then your uncertainty in timing an interval is likeley to be about say 0.2 s . If the period of the pendulum is about 1 second then 0.2 s uncertainty corresponds to about 20% .</em>
Explanation:
<em>#</em><em> </em><em>Brainliest Bunch</em><em> </em>
The earth spins and rotates on it axis and it will take 2 years to do a full Rotation (I think)