Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
3rd Edition
ISBN: 9780133593211
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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Answers: (a) F1= 36.1 N; (b) a= 43.9°; (c) F2 16.8 N;
(d)= 65.7
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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
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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
How do I know which forces are positive and which are negative?
How am I supposed to know which forces are under compression or tension?
i need the answer quickly
Chapter 3 Solutions
Thinking Like an Engineer: An Active Learning Approach (3rd Edition)
Ch. 3.4 - We often express criteria in terms that are not...Ch. 3 - 1. Prove the law of the lever.Ch. 3 - Demonstrate conservation of energy (potential...Ch. 3 - Determine the coefficient of static and sliding...Ch. 3 - 4. Prove that the angle of incidence is equal to...Ch. 3 - Prob. 5MDPCh. 3 - Prob. 6MDPCh. 3 - Prob. 8MDPCh. 3 - Find the center of gravity of an irregular piece...Ch. 3 - 10. Show that for circular motion, force = mass ...
Ch. 3 - Prob. 11MDPCh. 3 - Measure the effective porosity of a sand sample.Ch. 3 - Prob. 13MDPCh. 3 - 14. Prove Hookes law for a spring.Ch. 3 - Prob. 15MDPCh. 3 - Prob. 16MDPCh. 3 - Prob. 18MDPCh. 3 - Prob. 19MDPCh. 3 - 21. Relate the magnetic strength to the radius.Ch. 3 - Determine the density and specific gravity of a...Ch. 3 - Determine the thickness of a specified coin or a...Ch. 3 - Prob. 26MDPCh. 3 - What is the volumetric flow rate from your shower?
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