Question

A nylon string has a diameter of 2 mm, pulled by a force of 100 N. Determine the stress!
Select one:
a. 40 * 106 N/m2
O b. 31.5 * 106 N/m2
c. 13.5 * 106 N/m2
d. 20 * 106 N/m2​

Answer 1

☆☆ANSWER ☆☆

C.) 13.5*106N/m2 is the correct option.

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Answer 2

Answer:

B is the correct option 31.5 * 106 N/m2 Stress = 3.18 × 10⁷ N/m²

Explanation:

Given:

Diameter = 2mm, Radius = r = d/2 = 2/2 = 1mm = 1 × 10⁻³ m

Force = 100N

To Find:

Stress

Formula:

$Stress = \frac{Force}{Area}$

Solution:

Area = A = πr²

A = (3.14) (10⁻³)²

A = 3.14 × 10⁻⁶

So, now from formula

Stress = $\frac{100}{3.14 \times 10^{-6} }$

Stress = $10^{8}/3.14 = 10 \times 10^{7} /3.14$

Stress = 3.18 × 10⁷ N/m²

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