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: Motion of a spring

  1. Nov 5, 2006 #1
    An 0.64-kg object is attached to one end of a spring, as in Fig. 10.14 and the system is set into simple harmonic motion. The displacement x of the object as a function of time is shown in the drawing above. Please take the values of A and T as: A = 0.087 m and T = 1.8 s. With the aid of this data, determine


    ive already calculated amplitude, angular frequency, spring constant.

    I cant figure out how to calculate these:

    (d) the speed of the object at t = 3.6 s

    (e) and the magnitude of the object's acceleration at t = 3.6 s


    any tips??
     
  2. jcsd
  3. Nov 5, 2006 #2

    radou

    User Avatar
    Homework Helper

    You have a function x(t) which represents displacement. Now, what do the first and second derivatives of this function with respect to time represent?
     
  4. Nov 5, 2006 #3
    sorry but i'm really lost here - can you please clarify what you mean by what the first and second derivatives with respect to time means? thanks for your patience
     
  5. Nov 5, 2006 #4

    radou

    User Avatar
    Homework Helper

    I don't want to sound uncooperative, but I think you should do some google-ing at this point or consult your physics/calculus books.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook