選修物理B1-4-3
Quiz
•
Physics
•
11th Grade
•
Practice Problem
•
Medium
來加 以
Used 2+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
如圖所示,設A、B之質量分別為m及3m,滑輪及繩重不計,不考慮任何阻力,若欲使物體C保持不動,則C的質量為多少?
3m
6m/5
2m
4m/3
8m/3
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
A、B球之質量均為m,C球質量為2m,重力加速度量值為g,B、C間以不計重量之彈簧連接,A、B間以不計重量之細繩連接,A懸掛於天花板,平衡如圖所示。現以剪刀將A球與天花板間之細繩剪斷,剪斷瞬間,施予C向上的彈力來不及改變,使C暫時無加速度,且A與B因受彈力之故,向下加速度相同。則A球與B球之間的細繩之張力為何?
0
(1/2)mg
mg
(3/2)mg
2mg
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
水平桌面上有一質量m的架子,在架上則有一顆質量為M的珠子,沿著架上的桿子下滑。若珠子下滑的加速度為a,則珠子下滑期間地面對架子的正向力為何?(重力加速度量值為g)
Mg
(M + m)g + Ma
(M + m)g − Ma
(M + m)g − ma
(M + m)g + ma
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
如圖所示,將質量分別為M1及M2 (M1 = 3M2 )的物體懸掛於滑輪下,設滑輪為光滑,且繩重及滑輪重均不計、重力加速度量值為g,若加速度方向如圖所示,則M1之加速度為何?
(5/6)g
(10/13)g
(5/13)g
(2/3)g
(4/3)g
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
如圖為纜車輸運貨物的情景,已知傾斜的纜繩與水平方向的夾角為37°。當載重車廂沿纜繩向上加速運動時,重物(質量為m)與車廂仍然保持相對靜止狀態,重物對車廂內水平地板的正向力為其重力的1.18倍,那麼這時重物對車廂地板的摩擦力大小為何?(sin37° = 0.6,cos37° = 0.8)
0.24mg
0.20mg
0.23mg
0.25mg
0.21mg
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