Question

Find the maximum length of steel wire that can be hung without breaking. The breaking stress is 7900000 N/m2 and density is 7900 kg/m3​

Answer 1

Answer:

At point B, stress will be maximum and will be equal to Areaweight

At point B, stress will be maximum and will be equal to Areaweight⇒(stress)B=Am×g=(ρ)AA.lg

At point B, stress will be maximum and will be equal to Areaweight⇒(stress)B=Am×g=(ρ)AA.lg=ρlg

At point B, stress will be maximum and will be equal to Areaweight⇒(stress)B=Am×g=(ρ)AA.lg=ρlgAt Breaking point, 

At point B, stress will be maximum and will be equal to Areaweight⇒(stress)B=Am×g=(ρ)AA.lg=ρlgAt Breaking point, (stress)B=Breaking stress

At point B, stress will be maximum and will be equal to Areaweight⇒(stress)B=Am×g=(ρ)AA.lg=ρlgAt Breaking point, (stress)B=Breaking stress⇒ρlg=B.S⇒l=(7800)(10)7.2×108

At point B, stress will be maximum and will be equal to Areaweight⇒(stress)B=Am×g=(ρ)AA.lg=ρlgAt Breaking point, (stress)B=Breaking stress⇒ρlg=B.S⇒l=(7800)(10)7.2×108⇒l=9230.77 m