Conducted my first Physics Practical this year last Sunday – Finding the Period of a Simple Pendulum – for a S4 student who had not done any Physics Practical while in S3. Strange but true.
Although this is a simple physics practical, students can still make the following errors:
(1) Not measuring the length of the pendulum as the distance between the point of suspension and the middle of the bob;
(2) Not securing the string such that it can slip as the pendulum swings;
(3) Allowing the pendulum to swing in an oval or circular fashion (not in a single plane);
(4) Counting wrongly the number of oscillations;
(5) Not recording the data in the table to the correct number of significant figures;
(6) Choosing the wrong scale for the graph;
(7) Not drawing a best-fit line;
(8) Writing the wrong unit for the gradient;
Looking forward to the next Physics and Chemistry Practicals.
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