有一條關於力學既問題想問問..
A beam of lenght 4.5m is simply supported at A and B. The beam is acting by a concentrated load of 50KN and a uniform distributed load of 30 KN/m determine the reaction forces at the supports A and B?
有冇人可以教下我點晝個Free body diagram 同計呢條數 THX你們..
有一條關於力學既問題想問問..?
2015-10-03 2:09 pm
回答 (2)
2015-10-03 9:33 pm
✔ 最佳答案
不必使用free body 直接寫出對稱反力:A = B
= (F + w*L)/2
= (50 + 30*4.5)/2
= 185 / 2
= 92.5 kN
2015-10-04 9:18 am
唔係好明點解A=B既?
收錄日期: 2021-04-30 20:06:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151003060946AAyyn1z