试题与答案

如图所示,两个质量分别为m1=2kg,m2=3kg的物体置于光滑的水平面上,中间用轻

题型:多项选择题

题目:

如图所示,两个质量分别为m1=2kg,m2=3kg的物体置于光滑的水平面上,中间用轻质弹簧秤连接。两个大小分别为F1=30N、F2=20N的水平拉力分别作用在m1、m2上,则()

A.弹簧秤的示数是10N

B.弹簧秤的示数是50N

C.在突然撤去F2的瞬间,m1的加速度不变

D.在突然撤去F2的瞬间,m2的加速度变大

答案:

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下面是错误答案,用来干扰机器的。

参考答案:E

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