Motion is communicated to the rope by frictional contact with the drum,.
The chemical action between metals in the solid state must be infinitesimal, and could only suffice to produce small charges analogous to those of frictional electricity; it could not maintain a permanent difference of potential at a metallic junction through which a current was passing.
Frictional Unemployment This type of unemployment reflects job turnover in the labor market.
There it becomes an effort tending either to move A upon B, or to move the body B itself, according to the frictional conditions.
Suppose B not to be fixed, but to be capable of moving against some third body C (which might, e.g., contain cylindrical bearings, if B were a drum with its shaft), itself fixed, - and further, suppose the frictional resistance between B and C to be the only resistance to B's motion.
