本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 通用国际物理
[单选题]
An object of mass m is haa;3w poa-b *;c5/p /srcoiteh oby 2a+nging by a string from6fkn0l*2bi br62w( x t0 fvjidop7rpp c48-fb the ceiling of an elevator. The elevator is moving upward, but slowing down. What is the tension in the strip7 ffpciw4f krj622t0 8bv-lxbp rd 0*(iob6nng?
A. less than mg
B. exactly mg
C. greater than mg
D. zero
参考答案: A
本题详细解析:
暂无
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