tailieunhanh - Engineering Mechanics Statics - Examples Part 6

Tham khảo tài liệu 'engineering mechanics statics - examples part 6', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Engineering Mechanics - Statics Chapter 5 c m d m Ỡ 30 deg m g s Solution The initial guesses NA 20 N Nb 30 N NC 40 N Given 1 MA 0 -Mgcos ớ a - Mg sin ớ Nb sin ớ d Nc a b 0 S Fy 0 Nb - Mg Nc cos ớ 0 NA - Nc sin ớ 0 S Fy 0 Nc Nc 493 Nb Find Nc Nb NA Nb 554 N NA NA 247y Problem 5-18 The beam is pin-connected at A and rocker-supported at B. Determine the reactions at the pin A and at the roller at B. Given F 500 N M 800 N-m a 8 m 352 2007 R. C. Hibbeler. Published by Pearson Education Inc. Upper Saddle River NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced in any form or by any means without permission in writing from the publisher. Engineering Mechanics - Statics Chapter 5 b 4 m c 5 m Solution . c c a atan -------- V a b 1Ma 0 a -F - -J - M Bya 0 By Fa M cos a cos a a By 642 N - s Fx 0 - Ax F sin a 0 s Fy 0 -Ay - F cos a By 0 Ax F sin a Ax 192 N Ay -F cos a By Ay 180 N Problem 5-19 Determine the magnitude of the reactions on the beam at A and B. Neglect the thickness of the beam. Given F1 600 N F2 400 N Ỡ 15 deg a 4 m b 8 m c 3 d 4 Solution By a b - F2 cos ớ a b - Fia 0 353 2007 R. C. Hibbeler. Published by Pearson Education Inc. Upper Saddle River NJ. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced in any form or by any means without permission in writing from the .