2001CAP Prize Exam加拿大高中物理大奖赛真题答案下载

历年CAP High School Prize Exam加拿大高中物理大奖赛

真题与答案下载

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2001 CAP Prize Exam完整版真题免费下载

共计3小时考试时间

此套试卷由25道选择题以及3道大题组成

每道大题含有不同数量的小题

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2001 CAP Prize Exam完整版真题

2001CAP Prize Exam加拿大物理奥林匹克完整版答案免费下载

部分真题答案预览：

Part A选择题部分：

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

Part B简答题部分

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 acceler­ation 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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