then to the paying-out drum P, from it to the dynamometer D, and finally to the stern pulley, over which it passes into the sea.
The strap is usually of iron, and the pulley of hard wood.
A recording drum or integrating apparatus may be arranged on the pulley frames.
When the a,ces of a pair of pulleys are not parallel, the pulleys should be so placed that the part of the belt which is approaching each pulley shall be in the plane of the pulley.
The pulley or sheave FG has a weight W