In an environment

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

In an environment, brass and steel wires of length 1 m each with area of cross section 1 mm21 \text{ mm}^2 are used. The wires are connected in series and one end of the combined wire is connected to a rigid support and other end is subjected to elongation. The stress required to produce a net elongation of 0.2 mm0.2 \text{ mm} is, [Given, the Young's modulus for steel and brass are, respectively, 120×109 N/m2120 \times 10^9 \text{ N/m}^2 and 60×109 N/m260 \times 10^9 \text{ N/m}^2 ] (1) 1.2×106 N/m21.2 \times 10^6 \text{ N/m}^2 (2) 4.0×106 N/m24.0 \times 10^6 \text{ N/m}^2 (3) 1.8×106 N/m21.8 \times 10^6 \text{ N/m}^2 (4) 0.2×106 N/m20.2 \times 10^6 \text{ N/m}^2

Related theory

Browse the problem library