Question

a kid on a playground swing makes 6 complete to and fro swings each 30 seconds

the frequency of the swimming is ------------------------------

Answer 1

frequency = 1/ time period
therefore,
frequency = 1/30 =0.033 Hz....
i hope it helps.............

Answer 2

Hello !
Number of oscillations ( n) = 6
time taken to complete 6 oscillations =30 seconds.
time for one oscillation = 30 / 6 =  5 sec
frequency = 1 / time period 
f = 1 / 5 hertz                           Ans.
Thank you 1
Have a nice day!