本题目来源于试卷: Physics Unit9: Static Equilibrium, Elasticity and Fracture，类别为 通用国际物理
[单选题]
A uniform board of weight 40 N supports two children weighing:.py,v2ov9h l 8dnlnei ,k5td 500 N a r8lrqeved--. x 0.rhind 350 N, respectively. If the supdr-8 ier-.e0hqvrl .xport is at the center of the board and the 500-N child is 1.5 m from the center, what is the position of the 350-N child?
A. $1.1 \; m$
B. $1.5 \; m$
C. $2.1 \; m$
D. $2.7 \; m$
参考答案: C
本题详细解析:
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