歡迎來到Yogi老師解題給你看，今天我要講解的是AP Physics C Mechanics的問題
In the figure, blocks A and B have weights of 54 N and 30 N, respectively.
(a) Determine the minimum weight of block C to keep A from sliding, if μs between A and the table is 0.20.
(b) Block C suddenly is lifted off A. What is the acceleration of block A, if μk between A and the table is 0.15?