Thursday, March 2, 2017

forces - Is the coefficient of friction always less than unity?


Is the coefficient of friction always less than unity? What are the cases in which coefficient of friction is greater than unity?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...