0810

0810

11th Grade

10 Qs

quiz-placeholder

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0810

0810

Assessment

Quiz

Physics

11th Grade

Practice Problem

Hard

Created by

栢川 林

Used 1+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

如圖所示,彈簧的彈性常數為k,則當木塊m作簡諧運動時,其週期為何?(不計動滑輪的質量、摩擦力)

2πmk2\pi\sqrt{\frac{m}{k}}

2πm2k2\pi\sqrt{\frac{m}{2k}}

2π2mk2\pi\sqrt{\frac{2m}{k}}

4πmk4\pi\sqrt{\frac{m}{k}}

4πm2k4\pi\sqrt{\frac{m}{2k}}

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

設一質點作簡諧運動,其振幅為R,最大加速度量值為a,若由平衡點算起,則週期內的平均加速度值為何?

0

πa2\frac{\pi a}{2}

2aπ\frac{2a}{\pi}

π2Ra\frac{\pi}{2}\sqrt{\frac{R}{a}}

2πaR\frac{2}{\pi}\sqrt{\frac{a}{R}}

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

一理想的彈簧下方鉛直懸掛質量為m的物體,當物體由彈簧的自然長度靜止釋放,平衡時彈簧伸長x。自平衡點物體向下拉x後再釋放,則物體振動的最大速率為何?(重力加速度量值為g)

gx\sqrt{gx}

2gx\sqrt{2gx}

2gx2\sqrt{gx}

3gx\sqrt{3gx}

5gx\sqrt{5gx}

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

一物件作簡諧運動,振幅R,最大速率為v,則當位移x = 3R5\frac{3R}{5}  時速率為何?

 3v5\frac{3v}{5}  

 v2\frac{v}{2}  

 v3\frac{v}{3}  

 2v5\frac{2v}{5}  

 4v5\frac{4v}{5}  

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

一質點作週期為T的簡諧運動,令質點通過平衡點的時間為零,則當時間為 T6\frac{T}{6}  時,當時質點的速率為最大速率的幾倍?

 12\frac{1}{2}  

 23\frac{2}{3}  

 22\frac{\sqrt{2}}{2}  

 14\frac{1}{4}  

 32\frac{\sqrt{3}}{2}  

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

如圖為一質點作簡諧運動之位置(x)對時間(t)的函數圖,設向右為正,則:

時刻 t1t_1 瞬間物體速度向左

時刻 t1t_1 瞬間物體受力向右

時刻 t6t_6 瞬間物體速度向右

時刻 t6t_6 瞬間物體受力向左

時刻 t2t_2 質點瞬時加速度量值最大

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

如圖所示,將彈性常數  kAk_A  = 1N/m和 kBk_B   = 2N/m兩條彈簧,與質量m = 12kg物體組合後靜止於光滑水平面,將物體向左移動x後靜止釋放,則物體運動週期為多少s?

 2π22\pi\sqrt{2}  

 2π6(2+1)2\pi\sqrt{6}\left(\sqrt{2}+1\right)  

 2π32\frac{2\pi}{3}\sqrt{2}  

 π\pi  

 4π4\pi  

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