strain in wire?

1 ⤊

A force of 20 N is applied to a wire with an unstetched length of 2.5 cm. The wire gets 2.0 mm longer. The strain in the wire is??

please help, thanks

2007-04-01 05:15:57 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics

2 answers

Strain = Change in length / Original length and in this case we have change in length as 2 mm and the original length as 25 mm (2.5 cm). So strain is 2 /25 = 0.08 Note that strain has no units and is a dimensionless quantity.

2007-04-01 05:30:28 · answer #1 · answered by Swamy 7 · 1⤊ 0⤋

strain=change in length/original length
=0.2/2.5=0.08

2007-04-01 12:22:30 · answer #2 · answered by miley 2 · 0⤊ 0⤋