1.

An iron bar (Young's modulus = 1011 N/m², c = 10-/°C 1 m long and 10-3 m2 in area isI ted from 0°C to 100°C without being allowed tobend or expand. Find the compressive forcedeveloped inside the bar.(1) 10,000 N(2) 1000 N (N)(3) 5000 N(4) 105 N-​

Answer»

hat,The Young's modulus of an iron bar is AREA of iron bar, It is heated from 0°C to 100°C without being ALLOWED to  bend or expand.To find,The compressive FORCE  DEVELOPED inside the bar.Solution,The compressive force in terms of Young's modulus is GIVEN by :Plugging all the values in it we get :So, the compressive force developed inside the bar is 10,000 N.



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