Question

a simple pendulum takes 80 seconds to complete 40 oscillation what is the time period of the pendulum

Answer 1

T = 80/40 = 2 sec
time period is time taken ti complete one oscillation

Answer 2

Answer: The time period of the pendulum is  0.5 s.

Explanation:

In the given problem, a simple pendulum takes 80 seconds to complete 40 oscillation. To find the frequency, use the unitary method. There is 2 oscillations in one second.

The formula for the time period is as follows;

$T=\frac{1}{f}$

Here, T is the time period and f is the frequency.

Put f= 2 Hz.

$T=\frac{1}{2}$

$T=0.5 s$

Therefore, the time period of pendulum is 0.5 s.