In Fig., block 1 is placed on top of block 2. Both of them have a mass of 1 kg. The coefficient of friction between blocks 1 and 2 are
μs = 0.75 and
μk = 0.60.
The table is frictionless. A force P/2 is applied on block 1 to the left, and force P on block 2 to the right. Find the minimum value of P such that sliding occurs between the two blocks.