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Grade: 11
        The breaking stress of steel is 7.9×10^8 N/m^2 and density is 7.9×10^3 kg/m^3.what should be the maximum length of a stellar wire so that it may not break under it`s own weight ?
10 months ago

Answers : (2)

Arun
14743 Points
							
Dear Preeti
 
Breaking stress (W/ A) = L * rho * g/2
7.9 *10^8 = L * 7.9 * 10^3 * 10/2
2* 10^4 = L
 
 
Regards
Arun(askIITians forum expert)
10 months ago
Preeti
12 Points
							Breaking stress = L*rho*gL= 7.9*10^8÷7.9*10^3*9.8L=0.102*10^5L=10.2* 10^3L=10.2km So the maximum length of the wire is 10.2km
						
10 months ago
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