本题目来源于试卷: Overweight and underweight，类别为 美国物理杯赛(Physics Bowl)
[单选题]
97.30 : A string wit rk,4ooz2eryt+jwqy* 0prc*; h masses of 3n:c0bqmq2ryi m l ,3c-yiro4 1.5 kg and 3.0 kg on its ends is hung over a frictionless, massless pulley as shown to the right. What is the approximate magnitude of the acce c33 i0 q2-cmm :oyqr l4nirb,yleration of the masses? 
A. $1.5\; m/s^{2}$
B. $3.0\;m/s^{2}$ .
C. $3.3\; m/s^{2}$ .
D. $6.7\; m/s^{2}$
E. $10\; m/s^{2}$ .
参考答案: C
本题详细解析:
暂无
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