推 i98342108:Hint: Try subraction @@ 11/09 18:24
→ chenkaihsu:我也有用-的質量去算跟力矩一樣的答案 11/09 19:41
→ i98342108:那個message好像是說你的式子表達不對不一定是答案錯 11/09 21:30
→ i98342108:你要不要看一下說明之類的 輸入規則什麼的 11/09 21:30
[領域]普物 (題目相關領域)
[來源]課本習題 (課本習題、考古題、參考書...)
[題目]A uniform circular plate of radius 2R has a
circular hole of radius R cut out of
it. The center C' of the smaller circle is 0.8R a distance
from the center C of the
larger circle.
What is the position of the center of mass of the plate? [Hint: Try
subtraction.]
Find Xcm??From the center C of the plate
圖課本(Physics for scientists & engineers 4th by GIANCOLI)P244 66題
[瓶頸] (寫寫自己的想法，方便大家為你解答)
我算出來的答案是0.16R
但MASTERINGPHYSICS這網頁跟我說Your answer either contains
an incorrect numerical multiplier or is missing
one.
是我哪裡算錯了嗎??我用力矩算的
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