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The stress induced in a body, when suddenly loaded, is _________ the stress induced when the same load is applied gradually.

This question was previously asked in
BPSC AE Paper 4 (General Engineering Science) 25 March 2022 Official Paper
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  1. equal to 
  2. one-half
  3. twice
  4. four times

Answer (Detailed Solution Below)

Option 3 : twice
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Detailed Solution

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Concept:

The following points should be remembered for gradually applied load and suddenly applied load.

  • Stress-induced when load is suddenly applied is two times the stress induced when load is gradually applied.
  • The maximum deflection or deformation induced in material when load is suddenly applied is two times the deformation or deflection in material when load is gradually applied.
  • The strain energy stored in material when load is suddenly applied is four times the strain energy stored in material when load is gradually applied. 
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