- #1
boyblair
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Hello, having some problems with calculating young's modulus, please help.
1. A Strain gauge records the following strain when a block of material is pulled:
Force(N) Strain(%)
100 0.01
1000 0.1
2000 0.179
3100 0.9
Area of block = 10cmx10cm
Work out the modulus of elasticity and when the material fails?
Area over which force acts = 3.14x5x5
= 78.5cm2
In inches = 78.5/2.54
= 30.9 inch2
Stress = force/area
= 3100/30.9
=100.3 psi
E = Stress/Strain
= 100.3/0.9
= 111.4psi
1. A Strain gauge records the following strain when a block of material is pulled:
Force(N) Strain(%)
100 0.01
1000 0.1
2000 0.179
3100 0.9
Area of block = 10cmx10cm
Work out the modulus of elasticity and when the material fails?
The Attempt at a Solution
Area over which force acts = 3.14x5x5
= 78.5cm2
In inches = 78.5/2.54
= 30.9 inch2
Stress = force/area
= 3100/30.9
=100.3 psi
E = Stress/Strain
= 100.3/0.9
= 111.4psi