(Answered) 1 a rectangular block twice as high as it is wide is

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1. A rectangular block twice as high as it is wide is resting on a board. The coefficient of static friction between board and incline is .63. If the board is tilted will the block first tip over or begin sliding?

2. A uniform pole of mass M is at rest on an incline of angle secured by a horizontal rope. For what angle does the situation require the greatest coefficient of friction.

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