Space Time & Motion A.2 Forces & Momentum (id: 02858890b)

本题目来源于试卷: Space Time & Motion A.2 Forces & Momentum，类别为 IB物理学

[单选题]
Three identical masses are connected as show x6zj 6,z6u jwvt92nmxn wl*:u) ptx93l0 sf mvubith a string that passes over an ideal pulley. The tension in the string conl mx0lpb:utv3) s9fu* necting $m_1$ and $m_2$ is $T_1$
. The tension of the string attached to $m_3$ is $T_2$
The acceleration of the $m_3$ is $\frac{g}{4}$
Which of the following is correct for $T_2$ and the acceleration of $m_1$

A. $\frac{5T_1}{3}$ -$\frac{g}{4}$
B. $\frac{3T_1}{5}$ $\frac{g}{4}$
C. $\frac{5T_1}{3}$ $\frac{g}{4}$
D. $\frac{3T_1}{5}$ -$\frac{g}{4}$


参考答案:  A


本题详细解析:
All of the masses are connecqrj,psp . 6dw gakli0ke6l+2 8ted therefore the magnitude of the acceleration is the same for aa +0.ikwp ,sq d8p6lg2r6j kelll of them. But $m_1$ is accelerating in the opposite direction to the direction of $m_3$ Therefore, the acceleration of the $m_1$ is $\frac{g}{4}$ ​ When Newton's second law is applied to $m_1$ .

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