Pendulum problems

1. Jan 30, 2008

lexi_love

can someone explain how to find the period of a pendulum when given only the time?

how do you find the period of a pendulum that makes 35 oscillations in 12 seconds? also the frequency?

a simple pendulum can be used as an altimeter on a plane. how will the period of the pendulum cary as the plane moves from the runway to its cruising altitued of 1.00x10^4 meters?

2. Jan 30, 2008

rock.freak667

35 oscillations in 12 seconds

Periodic time is the time taken for one oscillation

Frequency is the number of oscillations per second

3. Jan 30, 2008

lexi_love

sweet. thanks. that helps alot. do you know anything about the other problems?

4. Jan 30, 2008

rock.freak667

Sorry, I have some ideas but I think I am over thinking it...so that's a no

5. Jan 30, 2008

lexi_love

mmk. thanks..let me know if you figure it out please. =]