题干

绳系卫星是由一根绳索栓在一个航天器上的卫星,可以在这个航天器的下方或上方一起绕地球运行.如图所示,绳系卫星系在航天器上方,当它们一起在赤道上空绕地球作匀速圆周运动时(绳长不可忽略).下列说法正确的是(   )

A:绳系卫星在航天器的正上方

B:绳系卫星在航天器的后上方

C:绳系卫星的加速度比航天器的大

D:绳系卫星的加速度比航天器的小

上一题 下一题 0.0难度 选择题 更新时间:2018-06-19 09:53:00

答案(点此获取答案解析)

A,C

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                                                                      Winners Club
   Winners Club is a bank account (账户) specially for teenagers. It has been sep up to help you better manage your money. The club is a bank account where you receive a key-card, so you can enjoy dealing with your money 24/7 — that's 24 hours a day, 7 days a week!
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