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V125BC [204]
1 year ago
15

Consider a steel cable with a diameter of 8.0 mm. Calculatethe stress in the cable when it holds a person weighing 850 N.Report

your answer in MPa (106 Pa = 1 MPa).
Physics
1 answer:
pishuonlain [190]1 year ago
7 0

Answer:

stress = 16.9 MPa

Explanation:

The stress in the cable can be calculated as:

\text{Stress = }\frac{F}{A}

Where F is the force and A is the area. So, the area can be calculated as:

A=\pi^{}\cdot r^2

Where r is the radius. Since the radius is half the diameter, the radius is 4.0 mm and the area will be equal to:

\begin{gathered} A=3.14(4\operatorname{mm})^2 \\ A=50.24\operatorname{mm}^2 \end{gathered}

Then, replacing the force F by 850 N, and A by 50.24 mm², we get that the stress is equal to:

\text{stress = }\frac{850N}{50.24mm^2}=16.9\text{MPa}

Therefore, the answer is 16.9 MPa

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