Question
A simple pendulum takes 20 seconds to complete 12 oscillations. Calculate its time period. What type of motion does the pendulum undergo? [3 MARKS]
Answer: Option A
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i) The time period of a pendulum is the amount of time it takes to complete 1 oscillation.
Therefore the time period for 12 oscillations in 20 seconds can be calculated as,
Time period=Total timeNo. of oscillations= 2012=1.67 Seconds
ii) A Pendulum undergoes periodic motion. Periodic motion is a type of motion, in which the object repeats its motion in regular intervals of time.
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