Young's modulus from steel wire load and extension data

[ayaanle]

can anyone help me with this question...i am stuck


data for steal wire 1.72 m long and 0.4 mm diameter

load 10 20 30 40 50 60
extension 0.7 1.5 2.1 2.9 3.6 4.3

find youngs modulus?


i have this formula E=F/A*L/AL but don't know how to use it...

 

[LowlyPion]

Welcome to PF.

It would help if you had the right equation:
http://hyperphysics.phy-astr.gsu.edu/hbase/permot3.html#c2

A is your area - they give you the diameter.

F is your load - they give you a bunch of loads.

L is your length - they give you the length

ΔL is the change in length - they give you Δ's for various loads.