Hardened Steel

stainless steel (hardened 440) bar is 32.4mm diameter .if the strain gauge reads 0.004944, what mass lift?

Young’s modulus is defined as Stress divided by strain

You know what the strain is.

Stress is Force / area

You know what the area is as you know what the diameter is.

Young’s modulus = 200 GPa http://www.azom.com/details.asp?ArticleID=1024

so 200 Gpa = [...]