2001CAP Prize Exam加拿大高中物理大獎賽真題答案下載

歷年CAP High School Prize Exam加拿大高中物理大獎賽

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2001 CAP Prize Exam完整版真題免費下載

共計3小時考試時間

此套試卷由25道選擇題以及3道大題組成

每道大題含有不同數量的小題

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2001 CAP Prize Exam完整版真題

2001CAP Prize Exam加拿大物理奧林匹克完整版答案免費下載

部分真題答案預覽：

Part A選擇題部分：

1. D
2. D
3. B
4. C
5. C

Part B簡答題部分

Solution to Problem 1：

a) Free-body diagrams:

mg represents the weight of an object. N is the reaction force exerted by the ground on the cart, and N1 is the reaction force between m1 and M . T is the tension in the string.b) The three equations of motion are

T = m1 a1 (1) m2 g ? T = m2 a2 (2)

T = MA (3)

where a1, a2 and A are the accelerations of m1, m2 and M, respectively. The vertical forces on M cancel each other, and so do those acting on m1. M accelerates (to the left) because the string exerts a force T to the left on the pulley.c) Imagine yourself accelerating with respect to the ground, so that M is stationary with respect to you. Then the acceler-ation of m1 with respect to you (and therefore with respect to M) is a2 to the right, since the length of the string does not change. With respect to the ground, we must have

a1 = a2 ? A (4)

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