1. a force is applied to a copper wire, causeing it to bestretched. if the same

Question

1. a force is applied to a copper wire, causeing it to bestretched. if the same force was applied to a similar copper wireof twice the length, state the proportional change undergone by the(a) elestic modulus, (b) force, (c) area, (d) change inlength. 1. a force is applied to a copper wire, causeing it to bestretched. if the same force was applied to a similar copper wireof twice the length, state the proportional change undergone by the(a) elestic modulus, (b) force, (c) area, (d) change inlength.

Explanation / Answer

We konw that :           Elasticmodulus is :                          E   = F L / A L Where F = Force applied            L = Initial length            A = Area of crossection           L = Change in Length. From the above equation , E is directlyproportional to Length L Hence if Length becomes twice , E also increasesby 2 times. Area also increases by 2 times. Change in Length also increases by 2 times. But   Force decreases by 1 /2 times. Hope this helps u!

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