Thinking Like an Engineer: An Active Learning Approach (4th Edition)
Thinking Like an Engineer: An Active Learning Approach (4th Edition)
4th Edition
ISBN: 9780134639673
Author: Elizabeth A. Stephan, David R. Bowman, William J. Park, Benjamin L. Sill, Matthew W. Ohland
Publisher: PEARSON
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Chapter 3, Problem 8MDP
To determine

Show that the forces can be resolved into horizontal and vertical components.

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Non Concurrent Coplanar Forces
How do you calculate the external forces' resultant?
Answers: (a) F1= 36.1 N; (b) a= 43.9°; (c) F2 16.8 N; (d)= 65.7 %3D %3D Problem 2.5 Consider four forces F, F2, F3, and F4 shown in Fig. 2.19. Assume that these forces are applied on an object in the xy-plane. The first, second, and third forces have a magni- tude of F = 32 N, F2 = 45 N, and F3 = 50 N, respectively, and they make angles a = 35°, B = 32°, and y = 50° with the posi- tive x axis. The force F4 has a magnitude F4 55 N and its line of action makes an angle 0 = 65° with the negative x axis. F2 %3D %3D F1 (a) Calculate the scalar components of the resultant force vector ER (b) Calculate the magnitude FR Oof the resultant force. (c) Calculate an angle z that the resultant force vector FR makes with the horizontal. Fig. 2.19 Problem 2.5 Answers: (a) FRE 73.3 N, FRy = 93.5 N; (b) FR = 118.8 N; (c)r 51.9 Problem 2.6 As illustrated in Fig. 2.20, consider a 2 kg, 20 cm
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