SYSTEMS OF FORCES AND MOMENTS Flashcards
(14 cards)
1
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2
Q
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A pinned support will resist forces but not moments.
3
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4
Q
A
30X=6
X=0.2m
5
Q
if the member is pinned so that it rotates around point b, what counteracting moment must be applied at point A to keep the member in equilibrium?
A
6
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7
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8
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9
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10
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11
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12
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13
Q
A signal arm carries two traffic signals and a sign,
as shown. The signals and sign are rigidly attached to
the arm. Each traffic signal has a frontal area of 0.2 m2
and weighs 210 N. The sign weighs 60 Pa. The design
wind pressure is 575 Pa. The maximum moment that
the connection between the arm and pole can withstand
due to wind is 6000 I\·m, and the maximum permitted
moment due to the loads is 4000 N·m.
A
14
Q
A
