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Question
If a pendulum takes 0.5 s to travel from A to B as shown in the following figure, find its time period and frequency.
Solution
Time period from A to 8 = 0.5s
For an ideal pendulum,
Time period from A to B = time period from B to C = time period from C to B = time period from B to A
Total time period, T = time period from A to B + time period from B to C + time period from C to B + time period from B to A
= 0.5 + 0.5 + 0.5 + 0.5
= 2s
Frequency f = `1/"T"`
=`1/2` = 0.5 Hz
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