Engineering Mechanics: Statics & Dynamics (14th Edition)

Published by Pearson
ISBN 10: 0133915425
ISBN 13: 978-0-13391-542-6

Chapter 2 - Force Vectors - Section 2.4 - Addition of a System of Coplanar Forces - Problems - Page 40: 34

Answer

F1 = {200i+346j} N F2 = {177i-177j} N

Work Step by Step

F1 = {400 sin 30°(+i)+400 cos 30°(+j)} N (+i and +j because both are in +ve direction) F1 = {200i+346j} N Ans F2 = {250 cos 45°(+i)+250 sin 45°(-j)} N (+i and -j because X component is in +X direction and Y compenent is in -Y direction) F2 = = {177i-177j} N Ans
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