Solve Problem 3.1 by use of the component method. Give your answer for the magnitude to two significant figures.

Problem 3.1

As an introduction to dealing with force vectors, consider the four coplanar forces acting on a body at point O as shown in Fig. 3-1(a). Find their resultant graphically.

Starting from O, the four vectors are plotted in turn as drawn in Fig. 3-1(b). Place the tail end of each vector at the tip end of the preceding one. The arrow from O to the tip of the last vector represents the resultant of the vectors.

Transcribed Image Text:

160 N 110 N 30° 20° 45° O 80 N (a) 100 N Fig. 3-1 12 160 20⁰ α 0 0 80 (b) 110 30° 100 45°