Suggest a way to measure the coefficient of friction.

Direct measurement of the coefficient of friction is carried out, with the help of measuring equipment (point mesdoses, toriometers), each point of the contact surface is measured by the values of normal and tangential stresses, by which the coefficients of friction are determined. This method is only applicable in laboratories. Indirect measurements are based on the fact that in laboratory or production conditions the value of any parameter associated with the coefficient of friction is determined by a mathematical relationship. These methods are less accurate.

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