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MAE 101 homework 7

# MAE 101 homework 7 - Determine I x and k x Answer I x = 7...

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MAE 101: Statics and Strength of Materials Fall 2011 Due Wednesday, October 26 th , 2011 Problem 28 (Problem 7.49 from Bedford et al) Determine the reactions ar A and B . Answer A x = 0 A y = - Lw o / 6 B y = 11 Lw 0 / 12 Problem 29 (Problem 7.53 from Bedford et al) The aerody- namic lift on the wing is described by the distributed load w = - 300 p 1 - 0 . 04 x 2 N/m The mass of the wing is 27kg, and the center if mass is located 2m from the wing root R (a) Determin the magnitude of the force and the mo- ment about R exerted by the lift of the wing (b) Determine the reactions on the wing at R . Answer (a) | F | = 1178 . 1 N | M | = 2500 Nm (b) M R = - 1970 Nm F R = - 913 . 2 N Problem 30 (Problem 7.57 from Bedford et al) Determine the reactions on member ABCD at A and D . Answer A x = 7 kN A y = - 6 kN D x = 4 kN D y = 0 1

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Problem 31 (Problem 7.138 from Bedford et al)
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Unformatted text preview: Determine I x and k x Answer I x = 7 . 78 10 7 mm 4 k x = 69 . 77 mm Problem 32 (Problem 7.139 from Bedford et al) Determine I y and k y Answer I y = 3 . 10 7 mm 4 k y = 43 . 33 mm Problem 33 (Problem 7.139 from Bedford et al) Determine I xy Answer I xy = 1 . 0752 10 7 mm 4 Problem 34 (Problem 7.150 from Bedford et al) Determine I x and k x . Answer I x = 1 . 08 10 7 mm 4 k x = 36 . mm Problem 35 (Problem 7.151 from Bedford et al) Determine I y and k y Answer I y = 4 . 99 10 4 mm 4 k y = 24 . 5 mm Problem 36 (Problem 7.152 from Bedford et al) Determine J and k O Answer J O = 1 . 57 10 7 mm 4 k O = 43 . 4 mm 2...
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