...the cable
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Stress measures the force per square meter of the cross sectional area of the cable.
Stress = Force ÷ area
Force = Weight = 50 * 9.8
Area = π * 0.01^2
Stress = (50 * 9.8) ÷ (π * 0.01^2)
Stress = Force ÷ area
Force = Weight = 50 * 9.8
Area = π * 0.01^2
Stress = (50 * 9.8) ÷ (π * 0.01^2)
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Stress = F/A = mg/(pi*r^2)