A simple pendulum makes 10 oscillations in 20 seconds. What is the time period and frequency of its oscillation?
A
2s
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B
0.5s
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C
10s
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D
1s
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Solution
The correct option is A2s Simple Pendulum is a very small heavy metal bob suspended at a point from a firmly fixed support using a single strand thread so that it oscillates freely. The distance between the point of suspension and centre of bob is called the length of the pendulum.
One oscillation: One complete to and fro motion of the oscillating body is called one oscillation.
Frequency: It is the number of oscillations made by the body in one second.
Time Period: It is the time taken by a body to complete one oscillation. Hence, the Frequency and Time period are calculated as follows. Time period = Time taken by the pendulum/Number of oscillations made by the pendulum. 2010 =2s Frequency =1/Period 12 =0.5Hz
Hence, the Time period and frequency are 2 seconds and 0.5 Hertz respectively.