Question

A pendulum oscillates 290 times in 10 seconds. Find its time period (CLASS 8TH)

Answer 1

frequency =no of oscillation /time

taken

=290/10

frequency =29Hz

W. K. T

Time period =1/frequency

T=1/29s

Answer 2

we know, frequency is number of oscillation per second.

a/c to question, A pendulum oscillates 290 times in 10 seconds.

so, number of oscillations , n = 290

time , t = 10 sec

frequency , f = n/t = 290/10 = 29 Hz

and also we know,

time period = 1/frequency

= 1/29 sec

hence, time period is 1/29