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Unformatted text preview: plotter feet. The horizontal force at the feet will be equal to the force on the pen assembly and must be less than or equal to the maximum friction force, which is the product of the coefficient of friction and the normal force, which is the weight of the plotter. Horizontal driving force on pen ass'y F pen m pen a . F pen 1.25 N = Weight of plotter W plot m plot g . W plot 49.033 N = Minimum coefficient of friction F pen W plot 0.025 = P 0315.mcd...
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- Spring '10
- Machine Design