University:
Michigan State University
Course:
ERG 160 | Success in Science, Technology, Engineering, and Mathematics
Academic year:

2020
Views:

63

Pages:

1
Author:

Nicole Wang

COSMOS: Complete Online Solutions Manual Organization System Chapter 9, Solution 121. b = ka 2 x = a, y = b: At y = Then or k = b 2 x a2 b a2 ( ) dm = ρ π r 2 dx Now 2  b  = πρ  2 x 2  dx a  Then m = πρ b2 a 4 ∫ x dx a4 0 a 1 b2 = πρ 4 x5 5 a 0 = Now 1 πρ ab 2 5 or πρ = 5m ab 2 2 2  1 b 1     b  d I x =  r 2  dm =  2 x 2  πρ  2 x 2  dx  2 a 2     a   = 5m 1 b 2 4 b 2 4 5 b2 8 x x dx m x dx × × = 2 a9 ab 2 2 a 4 a4 a Then.. 5 b2 a 5 b2 1 I x = m 9 ∫0 x8dx = m 9 × x9 2 a 2 a 9 0 or I x = 5 mb 2 18

COSMOS Chapter 9 Solution 121

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