1. The problem statement, all variables and given/known data In an automatic materials handeling operation, metal blocks of 1.5 kg each are pushed one at a time from bottom of a stack six blocks high. If the coefficient of friction is 0.25, determine the horizontal force required to push. There is a figure bellow. I try to solve but my answer is different the offered solution. Don't know am i wronge or there is mistake in solution. Making me crazyy!!