Question

the breaking stress of steel is 8.0*10⁶ Nm-². Density of steel is 8.0*10³ kg/m³ and g=10.0 N/kg. Find the greatest length of the steel wire that can hang vertically without breaking​

Answer 1

Answer:

Correct option is

C

75 m

Stress=force/Area

6×10

6

=10×(Density×V)/Area

0.6×10

6

=8×10

3

×Area×l/Area

l=0.075×10

3

m=75m