Homework Help: physics

Posted by kala on Monday, February 4, 2013 at 2:29am.

a wire whose cross-sectional area is 4mm^2
is stretched by 0.1 mm by a certain load.if a similar wire double the area of cross-section is under the same load,then then elongation would be
ans:
1)0.05mm

physics - drwls, Monday, February 4, 2013 at 5:56am
Doubling the cross section area decreases the stress by a factor of two. The strain is also reduced by the same factor, so that the elongation is 0.05 mm (instead of 0.1 mm)

Your answer is correct.

Answer this Question

Related Questions

College Physics - A wire P has resistance R. If the wire is stretched and its ...
Physics!! Help!!!!! - A wire of length L and cross-sectional area A has ...
physics A - A net charge of 47 mC passes through the cross-sectional area of a ...
physics - A net charge of 47 mC passes through the cross-sectional area of a ...
physics - A net charge of 47 mC passes through the cross-sectional area of a ...
physics - A net charge of 47 mC passes through the cross-sectional area of a ...
Chemstry - A 4.1089 g piece of aluminum wire with a circular cross section is 42...
physics - A piece of gold wire is used to form a circular loop of radius 12.3 cm...
Physics - A certain piece of wire has a resistance of 250 ohms. if the wire is ...
Physics - A 100 m long wire with a cross-sectional area of 4 mm2 has a ...

For Further Reading

First Name:
School Subject:
Answer: