COSMOS: Complete Online Solutions Manual Organization System
Chapter 9, Solution 37.
I AA′ = 2.2 × 106 mm 4 = I + A ( 25 mm )
I BB′ = 4 × 106 mm 4 = I + A ( 35 mm )
2
2
(
I BB′ − I AA′ = ( 4 − 2.2 ) × 106 = A 352 − 252
)
1.8 × 106 = A ( 600 )
Then
(
)
I AA′ = 2.2 × 106 mm 4 = I + 3000 mm 2 ( 25 mm )
A = 3000 mm 2
2
I = 325 × 103 mm 4
I = 325 × 103 mm 4