Question

A wire of length 2m extends by 1mm when streched by a load 1kg.find the area of cross section of the wire given y 2

Answer 1

Answer:

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Answer 2

Answer:

Given: Initial length of wire = L, Final length = 2L, Hence extension of wire = l = 2L – L = L, Area of cross-section = 1 cm² = 1 × 10-4 m², Young's modulus of elasticity = Y = 2× 1011 N/m².