Question

A metallic rod breaks when strain produced is
0.2%. The Young’s modulus of the material of
the rod is 7 × 10⁹ N/m². What should be its area
of cross-section to support a load of 10⁴ N ?
(a) 7.1 × 10⁻⁸ m² (b) 7.1 × 10⁻⁶ m²
(c) 7.1 × 10⁻⁴ m² (d) 7.1 × 10⁻² m²

Answer 1

Answer:

A metallic rod breaks when strain produced is

0.2%. The Young’s modulus of the material of

the rod is 7 × 10⁹ N/m². What should be its area

of cross-section to support a load of 10⁴ N ?

(a) 7.1 × 10⁻⁸ m² ✔️✔️

(b) 7.1 × 10⁻⁶ m²

(c) 7.1 × 10⁻⁴ m²

(d) 7.1 × 10⁻² m²

→ Hope it will help you ❣️❣️