wieyPU ch\'opter 10. Problem g stee. dulu5 2.010 N/m2 wire that posses over pull
ID: 1791026 • Letter: W
Question
wieyPU ch'opter 10. Problem g stee. dulu5 2.010 N/m2 wire that posses over pulley. The unstretched length of the ire is 1 m-and its c o" sectional ree i, 1.5 x 10 s m2 The pulley 5 frictio les5 d mes less when the crates ore Keele sting deter m ne the change i The d ev ing sho s to crates that are connected by ength ef the wire. 1gnore the mass of the wire. Young's umber the talnance +/-2% Click if you would like to Show Work for this question: sn Show Work Question Attempts: 0 of 5 used VE FOR LATERExplanation / Answer
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
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