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Math Help - Evalute the value of extension

  1. #1
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    Evalute the value of extension

    Evalute the value of extension-dkm30822.jpg

    evaluate the value of extension ( x) which elongate under the action of load (w) of 6 N ? [Use your results obtained from rest 1 ]



    please help me How i can solve this question because I don't understand it clearly

    Experience as follows :

    First, we put spring on the board and a paper under spring to measure the distances between each point from the beginning to the end point of extension for each weight

    Then we increased laod to ( 0.2 n ) the measurement was between the starting point until end point of extension is 51 mm (( same steps for all load ))

    Then we've decrease the weights ( Every time one ) from end ( 0.5 ) to (0,1 ) we got same measurements

    then We calculated the average by calculat increases and decreases and divide by 2




    For information, there is a Positive relationship between weight and extension
    plese help me
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  2. #2
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    First of all you have to find spring constant. For that use readings 5 and 3, and 4 and 2.

    k = \frac{(0.5 - 0.3)}{(135 - 78)10^{-3}}

    Similarly calculate k for the readings 4 and 2. Then using f = - kx find x foe 5 N.
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  3. #3
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    plese I fon'r undertand

    see the test (1 )

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  4. #4
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    k = mg/x

    0..04/1 = 6 / X

    x = 6.6X10^-6 cm

    plese help me
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