本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 通用国际物理
[问答题]
Two boxes are connected by 42n l;lbgj1gts w9;f l a cord running over a pulley as shown in Fig. 4-5. ze1od *qc0/ybv)ca4 e Box I of oe/ q)*zb1cyv4acd0e mass 8.0 kg rest on the top of the table; the coefficient of kinetic friction between box I and the table is 0.10. Box II has a mass of 15.0 kg. (a) Draw the free-body diagrams for the two boxes, identifying all of the forces acting on each of the masses. (b) Calculate the acceleration of the system. (c) Calculate the tension in the cord. 
参考答案:
(a) Box one is acted on by the force of gravity in a downward direction, the normal force due to the table top in an upward direction, the tension in the string toward the right, and the force of friction due to the table top toward the left. Box two is acted on by the force of gravity in a downward direction and the tension in the string in an upward direction.
(b) $6.1 \; m/s^2$
(c) $56 N$
本题详细解析:
暂无
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