1. Not finding help here? Sign up for a free 30min 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!

Stupid SHM questionshelp

  1. May 17, 2005 #1
    Hi all, I have been studying for my physics final which is tomorrow for the past 9 hours..my brain hurts.....sorry if this question is dumb

    I keep getting



    what is the difference between the two again in the physical sense (i.e. would the motion of pistons in a car be f or T)

    I know that T=1/f
  2. jcsd
  3. May 17, 2005 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Period and frequency are two sides of the same coin. They both can be used to describe the same motion. To keep them straight, think of the units they are measured in. Period is the time for one complete cycle of the SHM (think period of time); thus it is measured in seconds (or any other unit of time). Frequency is the rate at which the SHM repeats itself in cycles per second; thus it is measured in cycles/second or just 1/sec. You know how to convert from one to the other.

    I hope this helps a little.
  4. May 17, 2005 #3
    The motion of pistons in a car could use both of these, however, the motion of the pistons themselves are just Simple Harmonic Motion. They can be measured in period and frequency, if that's what you mean. The frequency of the pistons would be how many times they cycle per a given time and the period would be how long it takes for them to do just one cycle. Hope this helps.
  5. May 17, 2005 #4
    Period: Think of a period of time when something is happening. Period in SHM is the time for oen complete oscillation, aka the time it takes for the motion to finish a cycle and start repeating.

    Frequency: How frequently is it happening? How many times per second?
  6. May 17, 2005 #5
    Thanks for the help guys. I can't believe I forgot that ><. Well I got to get back to work. Thanks again for the help, this site rocks!!!!
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Stupid SHM questionshelp
  1. Stupid Question (Replies: 6)

  2. Shm help (Replies: 4)

  3. Stupid question (Replies: 2)

  4. Help with SHM (Replies: 0)

  5. SHM Help (Replies: 7)