本题目来源于试卷: Physics Unit9: Static Equilibrium, Elasticity and Fracture，类别为 国际高中通用物理
[单选题]
Two scales are separated by 2.00 m, and a h/j4scg 5k5j. zufhpg e8elq,75;3v. oc iit bplank of mass 4.5flzqxxui(tnz.it5.u4h a5x.t ih- q k w9/w(00 kg is placed between them. Each scale is observed to read 2.00 kg. A person now/u. kunw(5 h5i(xliix.t4 tat5zw qh9z. qx f- lies on the plank, after which the right scale reads 30.0 kg and the left scale reads 50.0 kg. How far from the right scale is the person's center of gravity located?
A. $1.20 \; m$
B. $1.23 \; m$
C. $1.26 \; m$
D. $1.30 \; m$
参考答案: C
本题详细解析:
暂无
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