gc physics textbook chapter 4 problems (id: a18b5554d)

本题目来源于试卷: gc physics textbook chapter 4 problems，类别为 通用国际物理

[填空题]
A box weighing 77.0 N restnrq7 3iv6;j;d we8 vlrs on a table. A rope tiede -e n*-z:+5lzriqkiy to the box runs vertically upward over a pulleyy-iz+ql*eekn : i5 -rz and a weight is hung from the other end (Fig. 4-40). Determine the force that the table exerts on the box if the weight hanging on the other side of the pulley weighs
(a) 30.0 N ,   
(b) 60.0 N ,   
(c) 90.0 N .   

参考答案:
空格1: 47±2%  空格2: 17±2%  空格3: 0±2% 


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