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> 100年 - 100 淡江大學 轉學考 工程力學#55755
100年 - 100 淡江大學 轉學考 工程力學#55755
科目：
轉學考-工程力學 |
年份：
100年 |
選擇題數：
0 |
申論題數：
4
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所屬科目：
轉學考-工程力學
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申論題 (4)
【已刪除】1. The cross sectional area of the rectangular beam (Figure la.) and the T beam (Figure .) is 24 cm
2
, respectively. It is noted that the area moment of inertia of the rectangular area (with respect to the centroid (幾何中心）and x-axis {i.e. /I
xc
)) is 72 cm
4
{i.e. 4(6
3
)/12 = 72cm
4
). Please
locate
the centroid (C) of the cross-sectional area of the T beam, and then
find
the area moment of inertia (I
xc
) of T beam as shown in Figure . What will be your
comments
if compare with the answer of Figure and . ? (Note: the dimensions in Figures la and b are not in scales) (35%)簡易中文提示(詳 情請閱讀原題目）：圖la及lb截面積相等，求圖16的幾何中心及其面積慣性矩 (I
xc
)，並與圖la的面積慣性矩比較，且寫出你的看法。注意：圖中各標記尺寸並不 一定等比例。
【已刪除】2. Give reasons why a zero-force member like AE in Figure 2 is still an important part of the truss even if it is not carrying any load. (15%)
【已刪除】3. Rod AB rotates about point A as shown in Figure 3. Its motion is defined by 9 = 4t
3
. Where 0 is in radians and t is in seconds. At t = 0.5 seconds, what will be the
magnitude
of the acceleration of end B. (20%)
【已刪除】4. A 50-lb block is acted upon by an 80 lbs force as shown in Figure 4. If the block is initially at rest, determine its velocity after it has traveled a distance of 10 ft. Assume coefficient of kinetic friction between the block and the plane to be 0.2. (30%)
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