Help!! Don’t copy last posted question 3. The figure shows three forces acting on a pin-supported rectangular plate at points A, B,and C. Use the scalar method of computing moments in this problem.a. Compute the moment of the force at A about D and write your answer in vector form(note: you can use the scalar method to find the moment).b.Compute the magnitude and orientation (0 < 0 <180°) of the smallest force Fg thatcreates the same moment about D that you found in part (a).c.If F= 20 lb and 8 = 30°, compute the magnitude of the horizontal force Fc thatmakes the resultant moment of these three forces about D equal to zero.16 in30 in23°55 lbAD24 inB20 inCFBFc8

3. The figure shows three forces acting on a pin-supported rectangular plate at points A, B, and C. Use the scalar method of computing moments in this problem. a. Compute the moment of the force at A about D and write your answer in vector form (note: you can use the scalar method to find the moment). b. c. If F= 20 lb and 8 = 30°, compute the magnitude of the horizontal force Fc that makes the resultant moment of these three forces about D equal to zero. 16 in Compute the magnitude and orientation (0 << 180°) of the smallest force Fg that creates the same moment about D that you found in part (a). 30 in 23° 55 16 A 24 in B 20 in C FB Fc

3. The figure shows three forces acting on a pin-supported rectangular plate at points A, B, and C. Use the scalar method of computing moments in this problem. a. Compute the moment of the force at A about D and write your answer in vector form (note: you can use the scalar method to find the moment). b. c. If F= 20 lb and 8 = 30°, compute the magnitude of the horizontal force Fc that makes the resultant moment of these three forces about D equal to zero. 16 in Compute the magnitude and orientation (0 << 180°) of the smallest force Fg that creates the same moment about D that you found in part (a). 30 in 23° 55 16 A 24 in B 20 in C FB Fc

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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Question

Help!! Don’t copy last posted question

3. The figure shows three forces acting on a pin-supported rectangular plate at points A, B,
and C. Use the scalar method of computing moments in this problem.
a. Compute the moment of the force at A about D and write your answer in vector form
(note: you can use the scalar method to find the moment).
b.
Compute the magnitude and orientation (0 < 0 <180°) of the smallest force Fg that
creates the same moment about D that you found in part (a).
c.
If F= 20 lb and 8 = 30°, compute the magnitude of the horizontal force Fc that
makes the resultant moment of these three forces about D equal to zero.
16 in
30 in
23°
55 lb
A
D
24 in
B
20 in
C
FB
Fc
8

Expert Solution

Step 1

Given:

$F_{A} = 55 l b θ = 23 °$

Solution:

(a)

The force component of force at A about x axis :

$F_{A x} = 55 \cos 23 ° = 50.63 l b$

The force component in y direction:

$F_{A y} = 55 \sin 23 ° = 21.49 l b$

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