FIELD: physics.
SUBSTANCE: dynamic coefficient of external friction between two samples lying on each other and moving relative each other is determined, where the flat working surface of the bottom sample has a fixed angle of inclination with respect to the horizontal. The top sample is suspended using a hinge joint. Relative movement of the samples takes place on the horizontal until obtaining a steady-state turning angle of the hinge joint relative the direction of movement. The dynamic coefficient of external friction is determined using a formula.
EFFECT: possibility of high-accuracy determination of dynamic coefficient of external friction with measurement of only geometrical parameters of the system without measurement of frictional force.
2 cl, 2 dwg
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