Question:

Each of three blocks P, Q and R shown in figure has a mass of 3 kg. Each of the wire A and B has cross-sectional area 0.005 cm² and Young’s modulus 2 × 10^11 N m^–2. Neglecting friction, the longitudinal strain on wire B is _ × 10^–4.

                                         JEE-2024

Solution:                
Each of three blocks P, Q and R shown in figure has a mass of 3 kg. Each of the wire A and B has cross-sectional area 0.005 cm² and Young’s modulus 2 × 10^11 N m^–2. Neglecting friction, the longitudinal strain on wire B is _ × 10^–4. JEE-2024

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