本课配套习题挑战模式3/3
单选题
难度系数:
3.三个相同的支座上分别搁着三个质量和直径都相等的光滑圆球,支点在同一水平面上,球的重心位于球心,球和球的重心、分别位于球心的正上方和球心的正下方,如图所示,三球均处于平衡状态,支点对球的弹力为,对球和球的弹力分别为和,则
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一次做对,真牛!
+5奖励规则>
- 提示1:IOS4ieenjeaDheWGteS4i++8jOaUr+eCuTxpbWcgd2lkdGg9MzkgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvOTcvQUYvckJBQ0UxT1RMMkdSdFhRbEFBQUJ0QlV3eXlzMzM0LnBuZyI+5a+555CD55qE5by55Yqb6YO95rK/552A5a6D5Lus5LiO55CD5b+D55qE6L+e57q/5oyH5ZCR55CD5b+D77yM6ICM5LiN5piv5oOz5b2T54S25Zyw6ZSZ6K+v6K6k5Li65by55Yqb6YO95rK/552A5LuW5Lus5LiO6YeN5b+D55qE6L+e57q/6ICM5oyH5ZCR6YeN5b+DLg==
- 提示2:PGltZyB3aWR0aD0zOSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC85Ny9BRi9yQkFDRTFPVEwyR1J0WFFsQUFBQnRCVXd5eXMzMzQucG5nIj7kuKTngrnlr7nnkIPnmoTkvZznlKjlipvlpKflsI/nm7jnrYk=
- 答案:QQ==
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