Last month I published the test report: Pulley + rope efficiency. As with most tests, I was left with even more questions. The key observation was that measured pulley efficiency varies significantly (up to 10%)
There more to measured pulley efficiency than just consideration of the physical bearings or bushings on the axle. This report considers the effect of losses within the rope.
The Transport Hitch can be used to tension and hold a load in a limited set of scenarios. It is an interesting study of physics and it helps us to understand the importance of friction. This knot
The first quiz on that we published was on Mechanical Advantage and has had over 2,200 completions with an average result of 53.81%. If we assume that the people that have completed this quiz are a representative sample of
Pulley efficiency seems initially like a simple thing to measure, however it presents an excellent opportunity to consider various aspects of experiment design. Experiment design At face value it would seem that we could simply set up