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A solid metal bar of uniform diameter D and length L is hung vertically from a ceiling. If the density of the material of the bar is p and the modulus of elasticity is E, then the total elongation of the bar due to its own weight is
  • a)
    ρL/2E
  • b)
  • c)
    ρE/2L
  • d)
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A solid metal bar of uniform diameter D and length L is hung verticall...
The elongation of bar due to its own weight (W) is

where, 
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A solid metal bar of uniform diameter D and length L is hung vertically from a ceiling. If the density of the material of the bar is p and the modulus of elasticity is E, then the total elongation of the bar due to its own weight isa)ρL/2Eb)c)ρE/2Ld)Correct answer is option 'B'. Can you explain this answer?
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