Q4 Q4: For Fig.4, the required force to be exerted at A by the lever ABC is 4.2lb. If the springexerts a 15lb force at C, determine (a) the value of angle a and (b) the reaction at B.Q5: For the table lamp shown in Fig.5, determine the reactions at A, assuming the hinge at Aare fixed (support a moment). Take 0 = 20°50°0.5 m-90 N- m301mOAEFig. 2Fig. 1120 mmDI600 mm720 mm0.9 in.10-N4N4002.4 in.1.4 inFig. 3Fig. 4Fig. 5180 mm

Given dataForce exerted at point A FA = 4.2lbSpring force Fs = 15lbTo determine the value of angle…

Answered: Q4: For Fig.4, the required force to be…

Q4: For Fig.4, the required force to be exerted at A by the lever ABC is 4.2lb. If the spring exerts a 15lb force at C, determine (a) the value of angle a and (b) the reaction at B.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

Q4: For Fig.4, the required force to be exerted at A by the lever ABC is 4.2lb. If the spring
exerts a 15lb force at C, determine (a) the value of angle a and (b) the reaction at B.
Q5: For the table lamp shown in Fig.5, determine the reactions at A, assuming the hinge at A
are fixed (support a moment). Take 0 = 20°
50°
0.5 m-
90 N- m
30
1m
OA
E
Fig. 2
Fig. 1
120 mm
DI
600 mm
720 mm
0.9 in.
10-N
4N
400
2.4 in.
1.4 in
Fig. 3
Fig. 4
Fig. 5
180 mm

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