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ʵͧ2

Ǣͺ ʵͧ
1.ѧӷçк͡鹼ٹҧ  70
鹶ѧѺçѹ
7.7 x 104
ǵѹ Ҥ٧ͧѧ
˹˹蹹
1,000 kg/m3







2.   
Ӥ˹ 1,000 kg/m3 ѧѺѹԴ˹
˹
600 kg/m3 ҹйѹ繪˹Ҫ
20 cm  ҤѹҪ





3.   
ѧӨ״֡  6  դ֡ҡѺӷ֡ 5.85  Ҥ˹蹢ͧӷ ˹˹蹹Ө״
103 š/١ȡ





4.ͧ 3 Դ դ˹  103 , 1.36 x 10 1.2 x 103 š/١ȡ
Ҫǡѹ
ѹ ҢͧЪԴ٧ 
ӹdzҤѹͧͧǷҪ





5.ѹó (Absolute  pressure)  ǹ˹դ 2.0 x 106  N/m2 Тй鹤ѹҡҡѺѹ٧
10.2 m ˹觹֡ҡǹ ˹˹蹹 103 kg/m3





6.ٻ˹ͷ  0.04 ҧ ֡ 6,
8 10 çѹ鹷







7.еٹӡҧ 10 չҧҧ˹٧ 4
ӹdzçѹͧӷзӵͻеٹ





8.еٹ˹觡ҧ 6 дѺӢҧ˹٧ 7.5 ǹաҧ˹٧ 3 çѾѹеٹ





9. Ҥѹࡨشش˹
ӡҼǻͷ
50 ˹ͷդ˹ 13.55 x 103
./.3





10. ͹鹹˹ 100
öѺçѹͧ
7.2 x 107 ǵѹ дѺ˹͹٧ش÷͹Ѻ 
(˹蹢ͧ
103 kg/m3 f  = 10 m/s2)





11. Ǵ 3 鹼ٹҧ
0.15 ͹Ǵ¡ѵ
1.2 š Ǵ״͡ ʹʢͧѧͧҡѺ 8.0 x 1010
N/m2





12.ѵ 15 š
ǹǴЫդҡѺ
3.0 m о鹷˹ҵѴ
0.45 mm2 ǴйդʹʢͧѧҡѺ
5 x 1010  N/m2 ҤǢͧǴѧҡǹѵ










13. ͧ͡ç֧Ǵ 6 m  鹼ٹҧ
1.6 mm  Ǵ֧״͡ 1 mm  ˹ѧʹʢͧҡѺ 2 x 1011N/m2





14. Ǵ  4  m  վ鹷˹ҵѴ  0.30   cm2 ç֧  15000   ǵѹ ״͡  0.04  cm  ҤʹʢͧѧͧзǴ

























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Create Date : 19 ԧҤ 2553
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