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!

Period of a Pendulum

  1. Apr 17, 2013 #1
    1. The problem statement, all variables and given/known data
    Pendulum A is 20 cm long and has a 5g mass on it. Pendulum B is 30 cm long and has 10g mass on it. Which one has a faster period?


    2. Relevant equations

    d=v1t+0.5at^2

    3. The attempt at a solution

    First of all, does the mass of the pendulum matter at all? and if not then it I would need to find the time in both cases and divide by 1 right?

    Time Pendulum A= 0.20 s which means that the period is 0.20 s.
    Time Pendulum B= 0.25 s which means that the period is o.25 s.

    Am I right? Thank you in advance.
     
  2. jcsd
  3. Apr 17, 2013 #2

    rude man

    User Avatar
    Homework Helper
    Gold Member


    Nope.
    ???

    Whence these numbers?

    Am I right? Thank you in advance.[/QUOTE]

    No.
    What's the formula for the period of a simple pendulum?
     
  4. Apr 17, 2013 #3
    I do not know because we have not learned it. >.<
     
  5. Apr 17, 2013 #4

    rude man

    User Avatar
    Homework Helper
    Gold Member

    Then you'll have to derive it from the differential equation relating restoring torque to angular acceleration for small deviational angles.

    Really it would be simpler for you to just look it up though.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Period of a Pendulum
  1. Period of a Pendulum (Replies: 4)

  2. Period of a pendulum . (Replies: 2)

  3. Period of a Pendulum (Replies: 2)

  4. Period of a pendulum (Replies: 2)

Loading...