Q.5) A sign is erected on uneven ground supported by cables EF and EG, where point D lies below the x-z plane and G lies above the x-z plane. The tension in cable EG at E is 72 lbs. a) Determine the moment, in vector notation, that the tension force EG creates about the base of the sign AD. b) Compute the same moment vector about AD using a different position vector than part (a) within your cross product.

Q.5) A sign is erected on uneven ground supported by cables EF and EG, where point D lies below the x-z plane and G lies above the x-z plane. The tension in cable EG at E is 72 lbs. a) Determine the moment, in vector notation, that the tension force EG creates about the base of the sign AD. b) Compute the same moment vector about AD using a different position vector than part (a) within your cross product.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Cables

Cables are collections of wires, alternatively referred to as a cord, connector, or plug. They are one or more wires covered in a plastic covering that allows for the transmission of power or data between devices. The earliest use of recognizable electrical cable was the early commercialized telegraph lines. These were iron-made and tedious to produce and install cabling.

Question

Q.5) A sign is erected on uneven ground supported by cables EF and EG, where point D lies below
the x-z plane and G lies above the x-z plane. The tension in cable EG at E is 72 lbs.
a) Determine the moment, in vector notation, that the tension force EG creates about the base
of the sign AD.
b) Compute the same moment vector about AD using a different position vector than part (a)
within your cross product.
B
45 in.
E
96 in.
47 in.
57 in
8 in.
17 in.
21 in.
36 in.
14 in.
48 in,
D
12 in.
Coordinates of points
A (0, 0, 0), D (48, -12, 36), E (36,96, 27), G (47, 8, -17)
NN

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