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Math Help - Return time for a string

  1. #1
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    Return time for a string

    Hi
    I am struggling with the second part of this problem. It reads this way:

    A particle P of mass 0.8kg is attached to one end of a light elastic string of natural length 1.6m and modulus of elasticity 20N. The other end of the string is fixed to a point O on the smooth horizontal surface on which P rests. The particle is held at rest with OP = 2.6m and then released.
    a)Show that the, while the string is taut, P moves with simple harmonic motion.
    b)Calculate the time from the instant of release until P returns to its starting point for the first time?

    How do I start the b part? Please help!!!
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  2. #2
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    Did you do (a)? You should've gotten a periodic function. The answer to (b) is just asking for the period. Think about it
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  3. #3
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    Quote Originally Posted by snowtea View Post
    Did you do (a)? You should've gotten a periodic function. The answer to (b) is just asking for the period. Think about it
    Okay. My brain is rolling its nerves and searching for that unique oiling. Thanks. I'll be back!
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  4. #4
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    Quote Originally Posted by snowtea View Post
    Did you do (a)? You should've gotten a periodic function. The answer to (b) is just asking for the period. Think about it

    Will I need to consider the time it took the string to Slacken?
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