Answer:
7.236 seconds
Step-by-step explanation:
It is given that a pendulum is L meters long. The time,t,in seconds that it tales to swing back and forth once is given by
[tex]t=2.01\sqrt{L}[/tex]
We need to find the time taken by pendulum to swing back and forth once if the length of the pendulum is 12.96 meters.
Substitute L=12.96 in the given equation.
[tex]t=2.01\sqrt{12.96}[/tex]
[tex]t=2.01(3.6)[/tex]
[tex]t=7.236[/tex]
Therefore, the time taken by pendulum to swing back and forth once is 7.236 seconds.
