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Mechanical Properties Of Fluids

Question
CBSEENPH11020347

A man grows into a giant such that his linear dimensions increase by a factor of 9. Assuming that his density remains same, the stress in the leg will change by a factor of

  • 81

  • 1/81

  • 9

  • 1/9

Solution

C.

9

stress space equals space force over area space
equals mg over straight A space equals space fraction numerator volume space straight x space density space xg over denominator Area end fraction
Stress space equals space fraction numerator straight L cubed ρg over denominator straight L squared end fraction