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Friction Calculator Knowledge Check

Sharpen your friction calculator skills with algorithmically generated problems. Each attempt produces unique values to test your formula knowledge.

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An eraser of mass 0.7000000000000001 kg is pressed horizontally against a vertical whiteboard. If the coefficient of static friction between the eraser and the board is 0.45, what is the minimum horizontal force needed to keep the eraser from sliding down? (Use g = 9.8 m/s²)

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