摘要：Motion of a part on a horizontal plane is prede-termined by the dry friction force, the magnitude of whichis proportional both to the coefficient of dry friction andmagnitude of the normal force. The coefficient of frictiondepends on the material of contacting bodies and onroughness of their surfaces. To manipulate the body overthe plane under high friction coefficient it is necessary toprovide higher both the forces and amplitudes of the exci-tation.
