Question

3. The breaking stress of steel is 8.0 x 10^6 N/m^2.
Density of steel is 8.0 x 10^3 kg/m^3 and g = 10.0 N/kg.
Find the greatest length of steel wire that can hang vertically without breaking.

Answer 1

Answer:

l=σm/ p.g

l= 8 × 10^6 /8× 1o ^ 3 .(10)

= 10^2

it's the right answer..