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PLEASE ANS THE QUESTION BRIEFLY AND TELL HOW TO APPROCH WITH FORMULAE PLEASE ANS THE QUESTION BRIEFLY AND TELL HOW TO APPROCH WITH FORMULAE
we know, separation between two faces of metal cube , l = side length = 1m Cross sectional area of metal cube , A = (1m)² = 1m²Force, F = 4.2 × 10^8 Nmodulus of rigidity of copper, Y = 14 × 10^10 Now, use formula, Young's modulus, Y = Fl/A∆l14 × 10^10 = 4.2 × 10^8 × 1/(1 × ∆l)∆l = 4.2 × 10^8/14 × 10^10 = 3 × 10^-3 mSo, lateral displacement of top surface, ∆l = 3 × 10^-3 m or 3mm
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