1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Period equation, T=I/f, what does I mean

  1. Feb 12, 2010 #1
    I am doing a home project for my Physical science concepts class. i need to find the period of a pendulum's swing. the prof. gave us the formula, T=I/f and tells us that T is the period, and f is the frequency of the swing, but doesnt say what I is. Does anyone know?
  2. jcsd
  3. Feb 12, 2010 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    Welcome to Physics Forums :smile:

    "I" is really "1", i.e. the number one.

    T = 1/f​
  4. Feb 12, 2010 #3
    Thank you. :-)
  5. Feb 12, 2010 #4


    User Avatar
    Homework Helper

    It's important to understand equations intuitively. T=1/f can be rewritten as f=1/T. 1/T is the number of periods that can fit within 1 second of time. By definition, that's the frequency.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook