Question

3 h Question 3 (20 pts): A front loader lifts a 3000 lb load. a) Complete FBDs of each member on the drawings 2 f below. Identify all two force members. b) Using any FBD you think most appropriate, find the reactions at A and K. c) Find the remaining reactions on member KBCJ. d) Briefly explain why KBCJ is thicker in the middle 2台 than at the ends. B.

Answer 1

Fuy FeE 08 3o 0ob 0-13 Moment o H is 3es0 My- o н о 3000 Vo 13 0 .2 = 9612th Foace balonce Hy - 3000 o-8 Fhx3335 lb I4

F. L D YO 65 Moment about o.65 eh (0.8) /も. F= 4535-01 CD. Forte inComponentis 3eao 2433-s lb

A-B Fy o- 9 FAB = Flo-31.0.93 0 90 15 32 o Moment ahoot point 3000(21b)

6o00 b 33干sib 0-3 0:3 3ooolb 16 12 1153516. 2431 Lb -4500 lb 0-2 4 5352 wのイ。.. 03 → 45001b 24371b 6 3