A block of mass m is kept on a horizontal ruler. The friction coefficient between the ruler and the block is m. The ruler is fixed at one end and the block is at a distance L from the fixed end.
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A block of mass m is kept on a horizontal ruler. The friction coefficient between the ruler and the block is m. The ruler is fixed at one end and the block is at a distance L from the fixed end. A block of mass m is kept on a horizontal ruler. The friction coefficient [...]