Tham khảo tài liệu 'engineering mechanics - statics episode 1 part 10', 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 L 600 lb a - 4 ft b - 1 ft c - 1 ft d - 8 ft ớ - 40 deg Solution Guesses Ax 1 lb Ay 1 lb Fb 1 lb Given -Ax Fb cos ớ 0 -Ay Fb sin ớ - W - L 0 Fbcos ớ b Fb sin ớ c - Wa - L d c 0 Ax Ì Find Ax Ay Fb Fb kip IFB Ax Ì Ax Ay 1 K kip Problem 5-29 The device is used to hold an elevator door open. If the spring has stiffness k and it is compressed a distnace s determine the horizontal and vertical components of reaction at the pin A and the resultant force at the wheel bearing B . Given _ N k 40 m s m b 125 mm c 100 mm a 150 mm ớ 30 deg 362 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 Solution Fs kS SMa 0 -Fs a Fb cos ớ a b - Fb sin ớ c 0 a Fb Fs---T- ---- ---- cos ớ a b - sin ớ c Fb N A s Fx 0 Ax - Fb sin ớ 0 Ax FB sin ớ Ax N s Fy 0 Ay - Fs Fb cos ớ 0 Ay Fs - Fb cos ớ Ay N Problem 5-30 Determine the reactions on the bent rod which is supported by a smooth surface at B and by a collar at A which is fixed to the rod and is free to slide over the fixed inclined rod. Given F 100 lb M 200 lb ft a 3 ft b 3 ft c 2ft 363 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 .
