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考试日期:1983年1月15日考试时间:二科合计120分考试科目:物理Ⅰ一、(39分)如图1所示,质量分别为 m 和 m(M>m)的球 A、B 系在一条不可伸缩、不会断的软细绳的二端,这条细绳挂在顶板的定滑轮上。现在用手顶住 A,使二球的高度(从地面到球下端的距离)相等、静止后放手。对于 A、B 以后的运动、请从每个解答群中各选一个作为下述问题(问1～4)的答案。(设二球的初始高度为 h,重力加速度值为 g。又假设滑轮和细绳的质量以及空气的影
Exam Date: January 15, 1983 Exam Time: Two Divisions Total 120 Test Subjects: Physical I, (39 points) As shown in Figure 1, balls A and B of mass m and m (M>m), respectively It is tied to the two ends of a flexible cord that is not stretchable and will not break. This string is hung on the fixed pulley on the top plate. Now hand over A, so that the height of the two balls (the distance from the ground to the lower end of the ball) is equal, and then let go when it is still. For the A and B movements, please select one answer from each answer group as the answer to the following questions (1 to 4). (Set the initial height of the two balls to h and the gravitational acceleration to g. Also assume the mass of the pulleys and strings and the effect of the air.