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 1

Formula: 1 Mark
Result: 1 Mark
Type of motion: 1 Mark

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,

$Timeperiod=\frac{Totaltime}{No.ofoscillations}=\frac{20}{12}=1.67Seconds$.

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.