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hibbeler chapter3 솔루션

정역학

Engineering Mechanics - Statics

Chapter 3

Problem 3-1 Determine the magnitudes of F1 and F2 so that the particle is in equilibrium. Given: F = 500 N

θ 1 = 45 deg θ 2 = 30deg
Solution: Initial Guesses F 1 = 1N Given
+ → ΣFx = 0; +

F 2 = 1N

F 1 cos ( θ 1 ) + F2 cos ( θ 2 ) ? F = 0 F 1 sin ( θ 1 ) ? F 2 sin ( θ 2 ) = 0

↑ ΣFy = 0;

? F1 ? ? ? = Find ( F1 , F2) ? F2 ?

? F1 ? ? 259 ? ? ?=? ?N ? F2 ? ? 366 ?

Problem 3-2 Determine the magnitude and direction θ of F so that the particle is in equilibrium. Units Used: kN = 10 N Given: F 1 = 7 kN F 2 = 3 kN c = 4 d = 3
132

3

ⓒ 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 3

Solution: The initial

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