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在学习万有引力定律时,学生很容易将卫 星绕地球表面运行的角速度和地球自转的角速 度混为一谈,致使应用时经常出错．为了帮助学 生理解、区分这两个不同的角速度,笔者从三个 不同的角度来引导学生进行比较． 一、通过数据比较 (1)计算地球自转角速度ω自．众所周知, 地球自转一周的时间t=1天=24×3600秒,转
When studying the law of universal gravitation, students can easily confuse the angular velocity of the satellite’s orbit around the earth’s surface with the angular velocity of the earth’s rotation, resulting in frequent mistakes in application. In order to help students understand and distinguish between these two different angular velocities, the author guides students in comparison from three different perspectives. First, through the data comparison (1) Calculate the Earth’s rotation angular velocity ω since. As we all know, the time of one rotation of the earth t = 1 day = 24 × 3600 seconds, turn