Answer 1
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First we need to work out the area: |
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A = pr2
= p ´ (0.5 ´ 10-3)2
= 7.85 ´ 10-7
m2 |
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Stress = F/A = 500 N ¸ 7.85 ´ 10-7
m2 = 6.37 ´ 108 Pa
|
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Strain = e/l = 0.008 ¸ 2.5 = 0.0032 |
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Young’s Modulus = stress/strain = 6.37 ´ 108 Pa
¸
0.0032 |
|
= 2.0 ´
1011 Pa |