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Thread: Simple pendulum problems

  1. #1 Simple pendulum problems 
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    1. Why both L of left hand and right hand figures are different?
    2. Why mg is put on the right end, not middle of the bar, in the right hand figure?
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  3. #2  
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    Your drawing is too small. I can't read it.


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  4. #3  
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    Quote Originally Posted by Harold14370 View Post
    Your drawing is too small. I can't read it.
    You can see it View image: simple pendulum 1
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  5. #4  
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    Quote Originally Posted by 1w2e3r4 View Post
    Quote Originally Posted by Harold14370 View Post
    Your drawing is too small. I can't read it.
    You can see it View image: simple pendulum 1
    The simple answer is that, in order for the equations for the period of oscillation to be the same in both cases, the length, mass and force have to be defined as shown. Since the two cases are different, it should not surprise you that these quantities will have to be defined differently in general, for the equations to end up being the same.
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