Hi Russ, you are correct. These are better described as spools fixed in space, but free to rotate around the point at the center of the circle. Let's say that they are bearings, sitting on shaft. In the left picture, the tension on T1 will simply be T1-T2. What will the tension on T1 be in the picture on the right.russ_watters said:
In that case, there's an additional force missing from the pictures, one that acts at the center and opposes the net force of the applied T1 and T2.PaulB said:
I think you tripped over your wording there. I think you mean to ask about the force on the center bearing? T1 and T2 are applied forces, right? The force applied by the bearing is T1-T2, yes. For the second one, it's the same as long as T2 is somehow applied to the spool and not the fixt point directly. Otherwise T2 isn't really doing anything.PaulB said:
A pre-tension pulley is a mechanical device used to apply tension to a belt or chain in a system. It is typically used in engines and other machinery to prevent slippage and ensure proper functioning.
A pre-tension pulley is important because it helps to maintain the correct tension in a belt or chain, which is necessary for the proper operation of the machinery. It also helps to prevent wear and tear on the belt or chain, extending its lifespan.
A pre-tension pulley works by using a spring-loaded arm to apply pressure to the belt or chain. This pressure creates friction between the pulley and the belt/chain, keeping it in place and preventing slippage.
Some signs of a faulty pre-tension pulley include squeaking or grinding noises, excessive belt wear, and vibrations in the machinery. If you notice any of these signs, it is important to have the pulley checked and replaced if necessary to avoid further damage.
The lifespan of a pre-tension pulley can vary depending on usage and maintenance. It is recommended to have it inspected regularly and replaced every 60,000 to 100,000 miles or as recommended by the manufacturer.