wieyPU chopter 10 Problem g stee dulu5 2010 Nm2 wire that po

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Solution

on 5kg : 5g - T = 5 a

on 3 kg: T - 3g = 3 a

a = (5-3)(9.81) / (5 + 3)

a =2.45 m/s^2

T = 5 (9.81 - 2.45) = 36.8 N

Stress = Y (strain)

F / A = Y deltaL / L

36.8 / (1.5 x 10^-5) = (2 x 10^11) deltaL / 1.8

deltaL = 2.21 x 10^-5 m