Answer to Question #335650 in Analytic Geometry for Busi

Analytic Geometry

Question #335650

Four forces act on an object such that the object is at rest. Three of the forces are given by

F1 = 2i −2j, F2 = i −4j, F4 = −3i −5j. Determine F3 and its magnitude

Expert's answer

Let $F3=ai+bj.$ Then

2i −2j+ i −4j+ai+bj −3i −5j=0i+0j

a=0, b=11

F3=11j

|F3|=11

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