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Two vertical walls are separated by a distance of 1.50 m, as the figure shows. Wall 1 is smooth, while wall 2 is not smooth. A uniform board is propped between them. The coefficient of static friction between the board and wall 2 is 1.21. What is the length of the longest board that can be propped between the walls? Number Units

Two vertical walls are separated by a distance of 1.50 m, as the figure shows. Wall 1 is smooth, while wall 2 is not smooth. A uniform board is propped between them. The coefficient of static friction between the board and wall 2 is 1.21. What is the length of the longest board that can be propped between the walls? Number Units

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Two vertical walls are separated by a distance of 1.50 m , as the figure shows. Wall 1 is smooth, while wall 2 is not smooth. A uniform board is propped between them. The coefficient of static friction between the board and wall 2 is 1.21 . What is the length of the longest board that can be propped between the walls?
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