Question

A simple pendulum completes 40 oscillations
in one minute. Find its (a) frequency, (b) time period.
​

Answer 1

Answer:

a. 0.67

b. 1.5

Explanation:

frequency =oscillations/time

=40/60=0.67hertz

time period=1/frequency

=1/0.67= 1.49

Answer 2

Answer:No. of oscillations= 40

time taken= 1 min =60 sec

f=$\frac{No. of oscillations}{time taken}$

=$\frac{40}{60}$= 0.66

and now, time period=$\frac{1}{f}$

=$\frac{1}{0.66}$= 1.5

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