? ? ? ? ? ? ? ? ? ?? Assume that you are moving a box with the height of b=2.7 m and width of a=1.5 m . Suddenly, the box slips from your hands and starts pivoting at the edge of a step. Find the required parameters for the two following scenarios: a) The box purely rotates about point A until it gets to the angle ?=37? when it starts slipping at the edge of the step. What is the static coefficient of friction between the box and the step?

?s=

b) Assume that there is no slippage between the box and the step and the box keeps pivoting about point A . What is the angle at which the box looses contact with the step?

?nocontac

? ?