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  • 13-09-2019
  • Engineering
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A cable in a motor hoist must lift a 700-lb engine. The steel cable is 0.375in. in diameter. What is the stress in the cable?

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nuuk nuuk
  • 19-09-2019

Answer:43.70 MPa

Explanation:

Given

mass of engine [tex] 700 lb \approx 317.515 kg[/tex]

diameter of cable [tex]0.375 in.\approx 9.525 mm[/tex]

[tex]A=\frac{\pi d^2}{4}=71.26 mm^2[/tex]

we know stress([tex]\sigma [/tex])[tex]=\frac{load\ applied}{area\ of\ cross-section}[/tex]

[tex]\sigma =\frac{317.515\times 9.81}{71.26\times 10^{-6}}=43.70 MPa[/tex]

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