Properties of Matter Part 3

A wire of cross sectional area A, modulus of elasticity 2×1011Nm−2 and length 2m is stretched between two vertical rigid supports. When a mass of 2‌kg is suspended at the middle it sags lower from its original position making angle θ=‌

1

100

radian on the points of support. The value of A is ______ ×10−4m2 (consider x<<L ). (given : g=10m∕ s2 )