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    Two Wires A and B, both are made from same material and are of same length but the Cross-Sectional Area of wire B is half of A.

    I know they have same young modulus, is it because extension for wire B will be double...or is there any other reason?
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    (Original post by jasbirsingh)
    Two Wires A and B, both are made from same material and are of same length but the Cross-Sectional Area of wire B is half of A.

    I know they have same young modulus, is it because extension for wire B will be double...or is there any other reason?
    sorry I dont understand what youre asking for..are you deducing the info(bold) from the given information or are you given the info already
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    (Original post by rbnphlp)
    sorry I dont understand what youre asking for..are you deducing the info(bold) from the given information or are you given the info already
    It's a question from past paper, it's asking whether the both wire have same Young Modulus or not ... I have looked in the Mark Scheme and it says that they do have same young modulus....I just want to know why ... is it because the extension for Wire B will be double than the extension of Wire A or is there any other reason.
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    You have the cause and effect the wrong way around.
    The extension (e) for wire B will be double because its cross-section area is half of A; and its original length and Young's Modulus are the same.
    The modulus is the same because it's the same material.
    e=(Fl)/(AE) from E=stress/strain is the starting point for any reasoning.
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    (Original post by jasbirsingh)
    It's a question from past paper, it's asking whether the both wire have same Young Modulus or not ... in the Mark Scheme it says that they do have same young modulus....I just want to know why ... is it because the extension for Wire B will be double than the extension of Wire A or is there any other reason.
    Because they are made from the same material!
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    (Original post by Dr.Black Knight)
    Because they are made from the same material!
    Exactly. The Young's modulus is a property of the material rather than a specific object.
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    (Original post by jasbirsingh)
    It's a question from past paper, it's asking whether the both wire have same Young Modulus or not ... I have looked in the Mark Scheme and it says that they do have same young modulus....I just want to know why ... is it because the extension for Wire B will be double than the extension of Wire A or is there any other reason.
    I thinks since it says it made of the same material , you can say young modulus is the same

    Edit:beaten very badly
 
 
 
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